So, I'm currently underway wiring up my gauges. I ended up pulling the ground from the factory grounds on the dash panel behind the knee bolster. The switched 12v source I pulled from the white/blue wire in the customer access harness that is behind the data link connector. The dimmer source I ended up tapping into the blue/red wire behind the dimmer switch. The constant 12v source I ended up pulling from Fuse #37 in the fuse panel using an add-a-circuit.

Now, last night I had the fuel pressure gauge all wired up and working and this morning it isn't. I'm assuming the fuse for the customer access harness wire I was using blew a fuse. Does anyone know which fuse those are tied into? I can't seem to locate it on the fuse diagram.

 

Nevermind, found it. It's fuse 29 on the under dash panel. I'm still curious how you guys wired up your gauges though.

 

I used the same tap, and I have had some trouble with it being intermittent at times. It's a pain, but simple to tap there.

 

Yea, we'll see how this works. I'll post up some pictures once I'm all done. Gotta go out and buy an 1/8" NPT tap to tap the intake elbow and exhaust manifold so I can install those. With the 3-gauge wiring kit from Glowshift it made it very easy to wire these things up. Just takes a while to get the harness taped and routed to make it hidden and look good. Also, if I want to later I've got two extra sensor wires already run.

 

If you need more power, use the add-a-circuit to activate a relay with larger contacts fed from a larger FUSSED wire tied direct to driver's bat.
I have seen a post where they had a mini power distribution panel for all their add-ons.

 

The add-a-circuit worked beautifully!