revlimiter Gauges waiting to be installed.
Your Shopping List
- A set of genuine revlimiter Gauges. - You can buy them right here on this site! Check out
the revlimiter.net Store. Other gauges may be of lesser quality or not
compatible with the steps below. Don't settle for anything but the best!
- Powder-free gloves - These come with your gauges. Because you'll never be able to wipe off finger prints from most gauges,
including your old stock ones.
- Pry tools - These come with your gauges. This is to remove your gauge needles without damaging
the old gauge faces.
- Needle Stoppers - These come with your gauges. If you have an old set of gauges before I started
shipping needle stoppers, you can follow the steps below to liberate the stoppers from your OEM gauges.
- Grab-Its dust cloth - This comes with your gauges. It's normal for gauges to become a bit dusty
while you work on them. This cloth gets them looking good before sealing up your cluster.
- Super glue - To stick the needle stoppers onto your new gauge faces.
- Tweezers - to help in gluing on your needle stoppers.
- Paper towels.
- An X-acto knife - to aid in the removal of the needle stoppers from your OEM gauge faces.
- 2 Phillips screwdrivers, one fine (#0) and one regular (#2).
- Needle-nose pilers - to nibble out plastic from behind your tach face.
Frequently Asked Questions
- I have an NB. Is it the same process?
It's very close. The gauge cluster is much easier to remove from an NB, but there's a little extra work once you get
it out. Hit my NB Gauge Install for something like 42 photos of the whole process.
- How do I install the needles?
Whoa whoa whoa. Getting a little ahead of things! That section is at the bottom of this document, under
Setting the Needles.
- Where can I get the gauges in these pix???
I sell them here on this site! Check out the revlimiter.net Store.
- What's the deal with those funky gauges with non-stock zero positions?
Miatas are quite blessed from the factory in that the tach and speedometer are round with the needle in the middle.
The gauges have absolutely no idea where o'clock the needle is pointing. As long as you follow the Setting the Needles
section correctly, the gauge will think that zero is zero. It doesn't matter if zero is at the stock 7 o'clock position
or anywhere else. It will rotate all the way around and stop before it loops back on itself around the stock 9500ish
mechanical hard stop.
- How do I know the tach is accurate after doing this?
There are a few tricks, the best of which is the 2500 rpm = 50 mph in 5th gear one. Really, the best way to assure
yourself of tachometer accuracy is to take some readings before you crack anything open. Mark on a sheet of paper what
speed equals what rpm in a couple of gears. After you're finished with the gauge face install, check against your own
- Will this make my odometer read wrong? Can I roll it back while I'm in there?
No. Popping out the cluster and opening up the gauges doesn't affect your odometer at all. And if you try to
roll it back, you'll just end up breaking it. I know this from experience. Not trying to cheat an odometer, but
because I've been in the Miata world a long time and have had a half dozen gauge clusters in my possession at one
point or another. I got a junky one and tried to roll back an odometer one day to see what would happen.
I changed one digit and all of the numbers magically lost their alignment. None pointed in the same direction
again, no matter what I tried to fix it.
- What happens if I don't hack out the extra plastic behind the tach?
That area on the bottom will not light up at all. It will be a perfectly black area at night. This is fine for a
stock-style gauge with zero at 7 o'clock, but for any other gauge it will look a bit silly.
- Some other shop sent me to this page. Is it cool if I use the info here?
Well, sure! The thing I enjoy most is helping out my fellow Miata enthusiast. However, I'd greatly appreciate
it if you would drop me a note and tell me about these other manufacturers who are ripping off my hard work.
Gauge Cluster Removal
To get access to the gauge cluster, you need to remove two plastic panels - the steering column cover
and the gauge hood - and 6 screws. Check out the diagram above and whip out your #2 Phillips screwdriver. Tackle
the column cover first.
One thing to note, you do NOT need to remove the metal knee guard that sits in the bottom dash area. The
column cover can be removed just fine with that knee guard in place.
After removing the 3-4 screws holding the column cover in place, you will be able to split it in half and set both
halves to the side. It snaps together very lightly and shouldn't put up much of a struggle as it comes out.
This is the first part of the job that will present a challenge. After removing the two screws holding the gauge hood
in place, you'll have to pull it free. The dash is holding onto it by these three points and the plastic becomes brittle
after years of baking in the sun. Pull it straight back (toward your face) in one motion. With luck, you'll not have
The one pictured here is from Sharka's 1997 body. It has been removed and installed something like
20 times. It's still fine. The one from Sharka's 1995 body broke the first time I removed it. I wish you luck.
4 screws are holding the cluster in place. Well, 4 screws and 3 plastic clip connections on the back side. We'll
get to those in a minute. For now, just remove these screws and set them aside. Then pull the cluster forward slightly
(less than 1 inch or 2 cm) to give yourself a little room in the back.
Sorry about the "Stock Gauges" edit. The gauges installed in Sharka at the time these photos were taken are actually
the ones you'll see at the end of this tutorial. I installed the gauges first and then took the installation pix as I
put things back together. Seeing the "wrong" gauges installed in these first photos was confusing, so I blacked them
These are quite easy to remove, actually. With practice. But the first time? They're a huge pain. Just get in
and out of the car a few times to figure out where each tab is and then shove your hand behind the cluster
and try your best. The two top connections are electrical. The one lower connection is the speedometer's mechanical
I thought this shot might help out a small bit. These are the three connections. You can see the little tabs
securing them a bit better in this photo.
Gauge Face Installation
Take the cluster out of the car and to a comfortable, dust-free work area. You might consider putting on your
gloves now. The gauges I make are not unique or more delicate than others. No gauge face I've ever seen is able
to have finger prints or skin oils wiped clean, not even the stock
ones. If you think you'll ever want to go back to stock faces, put those gloves on now.
To get at the gauges, you'll need to separate the front cluster cover (the glass) from the rest of the gauges. It is
secured by a bunch of little tabs that run around the outside. They are easily popped free with just your fingers.
Press down on one tab with your right thumb (I like to start on a top corner) and wedge the cluster glass free
with your left hand. It will open up very slightly. DO NOT FORCE IT. Then move to the tab next door and pop it free
with your thumb while opening up the glass even more with your left hand. After two tabs are free, you're most
of the way there. The rest of the tabs will open easily.
Incidentally, this is a great time to install a new cluster cover. The KG Works and AWD independent clusters will really
make your new revlimiter Gauges
look great. And if you do both at one time, that's one less time you have to remove
that delicate gauge hood.
Next, it's time to remove your needles. There are no better tools in the world for this than these small plastic
pry tools. I include them with every set of gauges. Using the face mounting screws as a fulcrum, put one pry tool under
either side of a needle...
... then just lift up! The most stubborn needle will pop free with very little effort and no damage will come to
your gauge face. If you rush, you might scratch the face slightly with the back of the pry tool, but any damage should be
under the needle center itself.
Next, remove the small screws holding the gauge faces in place. Be careful, since the metal is quite soft and
the screws strip easily. Set the screws aside for re-installation in a moment.
If your new revlimiter.net faces light up in a color other than the OEM green, you'll need to remove each of the four bulbs
and remove the little green bulb covers. Some folks call these "light bulb condoms". Whatever you call them, I'd
recommend putting them in a baggy with your old gauge faces and saving them. It is very hard to get new little green
condoms when you really want them.
If you ordered new bulb covers with your gauges, just slip them on now. They pressure fit on and don't require any tape
or glue or anything. Usually you can install them easily with a twisting motion.
Interior Light Removal Subsection
If your new gauge faces put the tach zero position in a different place than the stock 7 o'clock spot, you'll need
to modify your cluster a bit. This is 99% of the gauges I sell, so you most likely have to do this step. The cluster plastic
is easy to chew away. My favorite tools for this are a pair
of needle-nose pliers and a pair of wire snips. Don't use a dremel. The dust will get everywhere and be a pain to clean.
Remove the little tinted rectangle to expose the work area. A blade or something slim makes easy work of this. You could
also unscrew one of the bulbs and put a thin screwdriver through the back. Remember to reinstall the bulb!
Put on safety glasses.
Cut the partitions into slices with your wire snips. Cut each wall so that it's a rectangular shape and you're not struggling
to break off a partition with a bend in it. Lots of snips makes this an easy job. For more pix, check out the NB install
Once you've finished with the wire snips, grab a set of needle nose pliers and pull out the partitions. They will come out very
easily since everything is cut into squares. There's a good chance some of them will have come free by themselves.
This is what it should look like when you're done hacking away the walls. Nothing will be left between the light and the bottom
of the tach. Even lighting shall be yours!
If you ever want to reverse things and go back to stock gauges, you can easily rebuild the partitions. Buy a set of spark plugs.
They come with little cardboard tubes to protect the electrode. Those tubes are just about perfect for masking off the light for
each of the three indicators on the tach. Secure the tubes with a few drops of super glue.
Needle Stopper Subsection - Gluing
PUT YOUR GLOVES ON.
You will working with your new gauge faces a lot now. Treat them like they would
self-destruct the moment anything touches the front side. A few minutes of extra care here will be worth it. Would you
like to stare at an oily (or even dusty if using powdered gloves) finger print for the rest of your car's life?
There have been three methods of dealing with needle stoppers over the years: 1) cut off and re-glue your originals,
2) glue on the needle stoppers included with your gauges, and 3) poke the needle stoppers through the little holes in your
tach and OPG. For the past couple of years, genuine revlimiter Gauges include new stoppers for you to install.
You shouldn't have to follow the cut-off-the-stopper procedure any more.
Apply a drop of super glue to the back of the needle stopper. Don't be shy. Make a big dome-shaped drop on the back.
You'll remove most of that glue in the next 3 seconds.
Use the corner of a paper towel to remove most of the glue from the stopper. You want to end up with just a thin
layer of glue covering the back. This way, you won't have any excess glue seeping out from the edges of the stopper,
making your new gauge faces look bad.
That's what you're after. Just a little glue. Let it dry for a few seconds according to the glue directions and then
start practicing gluing it.
Rescue the sheet of paper marked "needle stopper glue target" from your gauge pack and start practicing.
I find it best to use tweezers to hold the stopper before dropping it onto the dot. Tweezers are more accurate than your
fingers, especially fingers covered in gloves.
Drop and remove. How did the dot of glue look. Too big? Apply less and try again. Too small a drop? Don't remove as much with
the towel and try again. Did you miss the dot completely? Try another 3 times at least. Be very happy with how you're dropping
the stopper before you move onto the gauge.
When you're ready, bring a gauge into your work area and glue up your needle stopper. Drop it on there. Move onto the next one.
Needle Stopper Subsection - Poke Through
If your gauges have a small hole in the tach and oil pressure face near the zero, you have a set that doesn't require you
to glue on the stoppers. This option is available with the more popular revlimiter Gauges. Custom gauges with different zero
rotations usually ship with the glue-on needle stoppers.
Hold the gauge face by the edges. Hold the needle stopper with your free hand. Poke the stopper through the face.
If it's hard to get the stopper through the tiny hole, twist the stopper while you insert it. A drilling motion will let the
stopper get through the face without much pressure.
Apply a small square of tape to the back to hold the stopper in place. Black electrical tape works best, but clear "Magic" tape
is fine too. If you use non-clear tape, make sure none of the numbers or tick marks are blocked by it.
Ta-da! Nothing to it. The gauge is now ready to be installed.
Install your new gauge faces. Smile a lot because you're almost done.
Setting the Needles
There is no good way to photograph each step of this. Sorry, but this involves a lot of reading. I'll try
to make it as easy to understand as possible.
This is the only gauge needle that you can set while the cluster is on your table inside. The
speedometer is self-zeroing. That means you can carefully and gently
place the needle on the zero position and
probably get it right. So stick it on there very lightly
and then spin the needle up to 20 mph or so and let it
fall by itself. Did it return to zero? If so, then give the needle a little extra press to make sure it's on there
and then call it good. If it didn't return to zero, pull it off and try again.
Take the cluster back out to the car and reinstall it with the glass covering removed.
all three inputs on the back of the cluster. I like to also screw in 2 of the 4 cluster mounting screws to hold it
in place and keep it from rattling around too much. Then turn the car on.
This is usually the second needle I put into place. With the car on and the engine cold, your oil
pressure gauge will read very near the maximum value (the highest oil pressure) it will ever show. Point the needle to
that spot and gently press it on. Not too hard! If you get it wrong and it starts showing low oil pressure when
the engine is hot, you'll want to remove this needle and try again. And, obviously, cars with dummy oil pressure
gauges don't really matter. Just put it on pointing at the middle.
When your engine has warmed up enough and you hear it idling normally, pop the tach needle in place
with it pointing somewhere around 850 rpm
. Next, rev up to your rev limit. Verify that the needle points to this
value. I say "this value" since many cars have aftermarket ECUs with non-stock rev limits. For stock cars, it is 7200.
If you have an aftermarket ECU, it is very easy to set the tach needle. Just plug in your laptop and monitor the engine
speed. If you see the needle is grossly incorrect, pop it off and try again. But if you don't have this luxury, there
is a trick: for cars with the 4.1 rear end (94-97), 50 mph = 2500 rpm in 5th gear. For 90-93 cars with the 4.3 diff,
I'm not sure of the magical check point. At any rate, once you're satisfied with the tach needle, you should
press it firmly in place.
Once you've finished messing around with the tach needle, your engine should be warm enough to
put the water needle in place. The stock position is approximately 11:30 o'clock. Put the needle in place and then
press it down firmly.
Last but not least, the gas gauge. I like to leave this needle off and drive to the gas station near my
house. Then I fill up. Then I drive back to my house and sit in the driveway and put the fuel needle a bit above the F
mark. It takes a little over a mile for a full tank of gas to register, so keep that in mind.
Lastly, turn the car off.
Keep the cluster glass off and verify that the needles fall to their correct zero
zones. If you didn't press the needle on hard enough, you'll have a droopy gauge. I'm talking to you, Mr. Water Temp.
The tach and oil gauges both have stoppers. The fuel gauge doesn't fall. The speedometer self zeroes. But the water
gauge can droop if the needle isn't pressed on hard enough. Once you're satisfied, give your new gauge
faces a quick dusting with the very edge of a clean paper towel (don't use pressure to dust!) and then snap the
glass cover in place.
And that's it. It sounds like a lot of work, but really the process is quite straightforward. With a little bit
of care, it's very easy to swap out gauges and put everything together with that OEM fit and finish.
Take everything out. Put on gloves. Put everything back in.
Poor Sharka has worn over a dozen sets of gauges in the past few years. Some extra pix were required.