knever3 Posted November 10, 2013 Share Posted November 10, 2013 I have an empty plug under the air box on my '87 Comanche. It's a 2 pin just like the MAT sensor MALE with a green waterproof rubber grommet. Does anyone know what this is supposed to plug into? Photobucket is not working for me today, neither is Picasa :fs1: It looks like this except with two pins. I thought I knew at one time but now I forgot. Link to comment Share on other sites More sharing options...
onlyinajeep726 Posted November 10, 2013 Share Posted November 10, 2013 It plugs into the temperature switch in the radiator that turns on the electric fan when the coolant gets too hot. It plugs into this thing: The above fan switch screws into this opening: Link to comment Share on other sites More sharing options...
mvusse Posted November 10, 2013 Share Posted November 10, 2013 That explains why I have that plug as well. My truck came without an auxiliary fan from the factory, I have since added one with a home made controller run off a sensor in a HO thermostat housing. Link to comment Share on other sites More sharing options...
knever3 Posted November 10, 2013 Author Share Posted November 10, 2013 It seems I already have that pluged into something?? I will look when I get home I guess. Link to comment Share on other sites More sharing options...
knever3 Posted November 10, 2013 Author Share Posted November 10, 2013 So this would not affect anything if it was not plugged in? I don't have an electric fan yet. Link to comment Share on other sites More sharing options...
onlyinajeep726 Posted November 11, 2013 Share Posted November 11, 2013 No, it won't affect a thing. Link to comment Share on other sites More sharing options...
HOrnbrod Posted November 12, 2013 Share Posted November 12, 2013 Plug like this? Link to comment Share on other sites More sharing options...
onlyinajeep726 Posted November 12, 2013 Share Posted November 12, 2013 Edit, I misread Don's post... nevermind. Link to comment Share on other sites More sharing options...
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