HELP gauge wiring

For the tach:

No pics, but I've been told to buy a multimeter that measures RPMS -- you can find this at Sears or on Ebay. Use that and find the wire from the distributor that gives you an RPM signal. I *assume* you just tap that wire and run it to the tach as the signal wire.

I haven't done this myself yet, but I've seen it explained on here before. I'm sure someone else can add something.

When I find my haynes manual, I'll scan the wiring diagram for the gauge cluster. Hope this helps.

I'm going to install a aftermarket tach too. Anyone has wire diagram available?

What year is your car?

You're on the right track with the voltage, you can run it off any switched 12v pretty much. I like to use the +B wire to the ECU because it's easy to find.

For the temp, you can hook that into the wire coming from the stock temp guage if you want, there's no real reason to do that though since you already have one. For the oil pressure, you need to get the actual part that measures the pressure and T that into the oil pressure switch. So basically you'll have the oil pressure guage and switch running out of the same port.

If you need a hand just email me drtweak@phoenixtuning.com

Eh yeap, it's normally a Black/Red wire that goes to the computer.

Or, there's a 12v wire that goes to your stereo that you can probably access easier.