great story

 

ok so Im doing the EFI swap and I have a ton of questions I'll be asking i know but the one that really concerns me right now that no one has ever posted on the internet that i can find is How do you connect the computer and harness of the EFI to the gauges of the stang so it will read correctly? I know how to get the speed-o to work but what about gas, oil, alt, water temp, tach, etc.? How do you get it to connect so it will illuminate the gauges? Do you use the stock harness for mostly stuff not engine related such as the lights, a/c, and heat?

 

Hey Vine. On my 66, I used the original 66 wiring and gauges. The gas gauge used the 66 wiring, as does the oil pressure.I put a 130 amp alternator in, and bought a wiring adaptor from Ron Morris specifically for this, so the original alt gauge remains the same. I know there are cheaper ways to put a modern alt on your car, but that's what I did. The water temp, I spliced the 66 water temp gauge to the EFI water temp wire, so the temp sensor in the intake manifold feeds both the EFI computer, and the dash gauge. As far as the tach, there is a wire in my 1992 harness that feeds the tach, and I use that wire when I want to know RPM, and I plan to get a tach eventually. In other words, most of the gauges on my dash continue to use the 66 wiring, and the EFI has it's own sensors/wiring, with the exception of water temp, I spliced those together.

 

Exactly....it's never posted because you use the original wiring from the vehicle.

 

ok, well that helps, thanks. i know I'll have more ques as i dive into this little undertaking. i have an engine and trans lined up but i haven't picked it up yet but plan to soon.