Honda Car Forum

how do i install and RPM gauge into a 91 honda civic hatchback?

Go find a cluster that will fit your year model car, and replace the entire speedo, gauge's, and such to where you do not have to hard-wire an external tach in your vehicle. In the long run, it will be better and less stressful. Otherwise, when you buy an external tach, there will normally be 4 wires to hook up. (I am basing all of this on an Autometer Tach) One will hook to your negative on the coil (mine was located inside the distributor, but I traced the wire that was hooked to the negative coil to the outside of the distributor itself and spliced into the wiring harness outside the distributor), one will go to a ground anywhere on the body of the car, one will hook to your in dash lighting (just wrap the wire around your dash lighting fuse), and one will go to your positive ignition switch (basically you can hook this to any fuse that comes on and stays on when you crank your car, for me it was the radio fuse) this should be all that you need to wire, but when it comes down to it, another cluster (found on ebay or a local junkyard) will be the easiest route! Have fun!

simple... you dont need to, your car already has one. if you dont know how to shift without looking at a 5" tach you need driving lessons.

connect the new Tach wire pickup to the BLUE wire on the distributor. that is the signal wire and attach the rest of the wires as per the tach instructions

assuming you mean stock ... find a stock cluster that fits and has all the other matching gauges you want. Install it and there you go. I did the same for my 90 Civic DX hatch. Had a little more searching to do as mine is an automatic, but I wanted a tach too. Found one in a Civic wagon at pick-a-part. Also had the gear shift indicator lights. Plugged it in and worked fine. Still working after 4 years.

hook up the wires and bolt it in