Stock Intercooler Pump Wiring?????

[Brwndrvr05]

Need to know which is the + & - on the factory harness. My 93 TY dose not have and intercooler pump on it when i bought it. Im installing a Jonson pump and it has a red and black wire. I believe the red is + and the black is - on the johnson pump, but need to know which the red & black connect to on the factory harness. Dose anyone know? My truck dose not have the engine installed yet so i can not test power on the factory intercooler harness. It also dose not have a battery and several other things keeping my from testing but would like to get this johnson pump installed befor i drop the motor in. Your help is greatly appreciated, thanks

 

[ty166]

Re: Stock Intercooler Pump Wiring?????

im kind of interested to know this also, im loading parts into the back of my ty in hopes of getting it running this spring. i did buy a new lighning pump and mounted it to my lower heat exchanger like this hoping it will fit.


and this is how i wired it so many moons ago, id also like to know if its right of if i need to swap the wires before i have it mounted.



the lower heat exchanger loom has three wires, (now bare with me as im partially color blind)

looks like orange, black and green. green runs seperatly and goes to the coolant sensor. orange and black to the plug for the pump. on the plug orange on the harness side is black on the pump side, black on the harness side is red on the pump side........ is the orange/black wire positive or is the black/red wire positive.....

like i said just curious as im trying to make it as easy as possible for whome ever it is that helps me out.

 

[Brwndrvr05]

Re: Stock Intercooler Pump Wiring?????

mine looks exactly the same way and it totally confused me. i thought the wires were crossed because when i went to unplug the harness, one of the wires came loose and i couldn't figure out why the colors didn't match up. From the looks of yours and what mine looked like, its supposed to be that why, i guess. I just need to know which color wire on the harness side that goes back to the firewall is + & -. Hopefully someone will chime in

 

[Damian]

Re: Stock Intercooler Pump Wiring?????

Since Ty166 has his stuff off the truck, just fill up the heat exchanger as much as possible and then hook it up to the harness and turn the key to the on position. Looking at the picture of the pump, water will shoot straight up if it's wired correctly. Or just use a volt meter and check too see which one has voltage with the key at the on position.

 

[ty166]

Re: Stock Intercooler Pump Wiring?????

how about a wiring diagram, anyone have a wiring diagram that could tell me or where i can find a wiring diagram ??