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Since I know most of you guys are running turbos therefore you must have gauges. I'm installing Defi gauges (EGT and Oil Pressure) and I need help. I know where to connect the power and ground wires but the ignition and illumination wires I'm lost. I don't know where to connect those two wires. Please help me. Thanks.

 
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You can use the power wire on the cig lighter for ignition power. For dash lights, you can use the stereo harness or the dash cluster. I can't remember exactly which wire it was, I'll look later. I think its blue.

 
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I used dash lights

 
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I used the harness on my gauge cluster (stock one). I used the same power wire for the Reverse Indiglos, tapped it into there, and grounded the other on a screw holding in the gauge cluster (where the Reverse Indiglos are grounded) Worked nicely the first try, that way, they only light up when you turn on your headlights. You'll waste the bulb otherwise, they say they dont last too long I guess. Im not sure. They talk about preserving the life of the bulb in my Autometer instructions. So dont use a constant 12v, you only want them on when you turn the headlights on.

 
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do you guys know which wire you tapped into.

 
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In the 01/02 cluster, its the red/black stripe wire in the blue connector. Towards the center of the plug. in the 03+ cluster, you're on your own.... they changed the connections. You may be able to match wire colors, just test it before you permanently wire anything in.

 
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and you should get rid of the oil pressure gauge. They have been known to fail, causing you to lose all oil, and of course causing major damage when that happens. So be careful. I have one, but it isnt hooked up, just filling up the 3rd hole on my pillar so its not empty. I wish I had a EGT gauge for right there. Sometime soon, Ill get one.

 
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how does the oil pressure gauge fail.

 
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I've never heard of an oil pressure sensor blowing out of the port its installed in. If the electronic ones fail, they just stop sending a signal to the gauge in the car. The mechanical ones on the other hand, can blow a fitting in the little tube, but you shouldn't have a mechanical oil gauge in a non-race car anyways. If you blow an electronic gauge out of the line, you messed up the installation, its as simple as that.

 
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Thats what I have, a Defi D gauge electric oil pressure gauge. You guys are scarring me.

 
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I was told not to install mine, by more than 1 person (not on the internet). I read before that they can fail on ya as well.

I have a boost, a/f, and need a egt gauge. i have a glowshift oil pressure, but need to get rid of it.

 
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Is it a mechanical or electrical gauge.

 
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ummmm, I dont know, its a cheap gauge. Glowshift, it came with the pillar pod, and I havent dont much with the oil press gauge. I need another autometer to match my others. probably mechanical. It has a pressur regulator or sensor, and a few wires on it, probably to light it up though, so probably mechanical??