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wiring diagram help! coolant and ac sensors


Well-known member
Nov 30, 2012
cincy, oh
ok, so first off, I have already searched. most wiring info I have found was for eclipse/talon/laser. The wiring on my 91 galant under the hood by the coolant sensors around the thermostat is all hacked up from previous owner. So I went to the junkyard and cut the plugs off of a 1g talon to solder them and clean up my engine bay. I would greatly appreciate if someone could check under their hood and see if I have these all going in the correct places. So this is what I have: yellow/green and green/black going to the front 2 wire coolant sensor on bottom front of thermostat housing. yellow/green going to the front 1 wire sensor which I think is for the gauge? green/red and green/black going to the top of thermostat 2 wire sensor which I think is for the a/c? and I have a leftover green/black wire that im unsure of where it goes. All of the o2 sensor wiring is still good and uncut. I also have a 1 wire sensor on the back of the thermostat housing(facing towards the firewall) that is not hooked up, here is a picture of that unknown 1 wire sensor. Anyone with any type of insight would be greatly appreciated, thanks!
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