To bump an old thread...
I'm currently doing a similar build. I need to have the 2 factory gauges, and I'm also adding an aftermarket gauge for accuracy and redundancy. The heads that I have came from a 1999 4.2 and they have the rear head temp sensor. Is this of any use to me, and if so how do I tie it in? I plan to have the bosses on the front of the intake tapped, but I'm looking for a place for the aftermarket one. Could I use the head temp in place of one of the stock sensors, and then use the front intake location for the new gauge?
Edit: I believe I can use the head sensor for the computer. They are both 2 wire, so I'll just reroute and repin for the different connector. And then run my new sensor in the front of the intake.
1994 Thunderbird - 2000 4.2L M5R2 now has 55k
1995 Thunderbird - 2002 Alum 4.6L SVO - Awaiting transplant...
1996 Cougar - 2004 3.9L 4R70W
Last edited by jco1385; 06-13-2014 at 11:11 AM.