Yesterday the guys at IAG did a great job with the 30k service and alignment after swapping back to summer mode. While they had the oil drained, I had them throw in the sensor for the oil temp gauge in the spare bung of the Killer B oil pan.
Then today I installed 2 more gauges. Oil Temp and EGT. When I bought this full-race header a few years back, it had a bung for EGT already, but it was plugged. I'm pretty sure the bung is 1/8 NPT, since the hex key size to get the plug out was standard. The EGT probe adapter is 1/8 PT (BSPT), but the two are close enough. So I didn't bother with any adapters. NPT is 27 TPI, PT is 28 TPI, doesn't matter much when you only have 5-6 threads engaged anyway. Of course I used Teflon tape to seal also.
Running the wires was a bit of a pain in the ass. I decided to move my two existing gauges (Boost and Oil Press) from the cluster pods, to up on the dash for better visibility. And the EGT and oil temp would then go in the cluster pods. The only problem was that doing this meant that I had to re-route the sensor wires from the oil press and boost along a new path since they weren't long enough as is.
So I pulled the driver wheel and fender liner, removed the sensor wiring for boost and oil press, then routed the wires from EGT and oil temp along that path, then routed the oil press and boost over through the passenger side of the firewall and under the dash. Then it was just a matter of taking the dash apart to wire up power to the 2 gauges on top. I ran all the wires for the top two gauges through the plug hole in the center of the dash. There's usually some kind of light sensor there, but I can't imagine what the hell that thing is for since we don't have auto lights or anything. I just left it plugged in but dangling behind the radio lol. I also relocated the PLX AFR readout to on top of the dash for better visibility.
Oil temp and EGT sensors installed:
Gauges installed and working perfectly:
Daytime pics, off vs. on: