I'm converting my washer pump from the firewall to a newer style pump in the washer tank. There are 4 wires going to the original washer pump assembly. Which two do I splice into to go to the new pump? Anyone have access to 86-87 wiring diagram for this? I just spent an hour searching the boards and came up empty.

 

ttt, just need to know where to splice the blue and red wires in from the new pump

 

I just replaced my washer pump and opened the housing it is in and the harness that goes into the unit connects to acircuit bord and that supplies power to the pump. You'd have to trace through that mess.
I'm curious as to why you are going to in tank pump as the replacement pump is like $15 and you'll have to run more wires in the engine bay.

 

I didn't know you could remove the pump from the firewall assembly and replace it. I thought you had to replace the whole assembly and it was almost $100. Oh well, I just hollowed out the old motor and soldered the wires to the motor connectors to run to the new pump.