Ok! Your gauge should have (power- ground- signal) I have an autometer gauge. Power should be hooked up to switched power, I bought a little adapter called add a circuit (available at most auto parts) it plugs in place of one of your fuses & gives u an extra circuit to run an accessory, make sure u plug it in a spot that is only activated when switch turns on. Ground in can get that almost anywhere. I'd use a test light to make sure it's a good ground, paint sometimes makes it hard to make contact. Signal is just the wire coming from the sending unit. This should be pretty much it. Of course mounting your gauge is a whole other part. I also run a oil temp gauge if u look @ the lower right side of one of the last pix. I run it inline.