Add-in power window wiring
#1
Alright, here's what I did...
My truck orginally came with power locks, but with manual windows. I got some factory power window regulators and motors... Then wired them in with a Spal switch kit, pn 33040188, and the pigtails for the factory motors... the reason I did this is so that finding replacement motors and regulators wouldn't be a problem and I put the switches over the holes in the door panels for a cleaner look vs having the cap over the orginal crank gear. Problem is that my passenger's side goes very slow and I have to help it by pulling it up and the driver's side barely makes it on it's own. I did not wire it in with any relay set up. I believe that is my problem and that I am not getting enough amperage to the motors.
The thing I'm looking for some help on is how I should wire this all up... and if the wiring and switches that came in the switch kit can handle the necessary amperage if I've got to put the amperage through the switch kit or straight battery power to the motors or what... the switch kit came with a 25 amp fuse so I'm thinking it probably wont be able to handle the high amps needed and I'll have to wire battery power to the motors directly and use the switch kit to trigger the relay... if that's the case, will I need to use two relays, one for each window, so that I can roll both windows up and down together?
Thanks for any help anyone can offer.
My truck orginally came with power locks, but with manual windows. I got some factory power window regulators and motors... Then wired them in with a Spal switch kit, pn 33040188, and the pigtails for the factory motors... the reason I did this is so that finding replacement motors and regulators wouldn't be a problem and I put the switches over the holes in the door panels for a cleaner look vs having the cap over the orginal crank gear. Problem is that my passenger's side goes very slow and I have to help it by pulling it up and the driver's side barely makes it on it's own. I did not wire it in with any relay set up. I believe that is my problem and that I am not getting enough amperage to the motors.
The thing I'm looking for some help on is how I should wire this all up... and if the wiring and switches that came in the switch kit can handle the necessary amperage if I've got to put the amperage through the switch kit or straight battery power to the motors or what... the switch kit came with a 25 amp fuse so I'm thinking it probably wont be able to handle the high amps needed and I'll have to wire battery power to the motors directly and use the switch kit to trigger the relay... if that's the case, will I need to use two relays, one for each window, so that I can roll both windows up and down together?
Thanks for any help anyone can offer.
#2
Yes I would recommend using a realay for each motor. I dont know if thats for sure your problem but it is a good idea to do regardless. Wire them up and see if that fixes your problem. If it doesnt then I would say your motors are going out but it is rare that two would at the same time. Did you buy them new or get them from salvage?
#3
Kind of salvage... I know they're good tho. I got them days back when I was working at the local chevy dealer. The regulators and motors were replaced under warranty for reasons like making noise or for people claiming they were too slow when replacing them with new ones didn't make a difference. They became mine once they cleared warranty and were just going to be thrown in the dumpster. And I'm sure that it isn't a motor because I've replaced the passenger motor and it didn't make a difference.
I know I should have done the relay set up, but I rushed myself. I couldn't handle making a truck payment and not even having power windows. But I've always had trouble wrapping my brain around how I should wire them in with the relay.
I know I should have done the relay set up, but I rushed myself. I couldn't handle making a truck payment and not even having power windows. But I've always had trouble wrapping my brain around how I should wire them in with the relay.
#4
It wouldnt be too hard to wire them with a relay. Basically all you want to do is make the switch trip the relay which will then in turn send power to the motors. For example, if you have a relay like this:

Wire the wire coming from the switch that is hot only when the switch is pressed to terminal 86, wire terminal 85 to ground, wire terminal 30 to 12 volts and wire terminal 87 to the motor.
Do the same for both doors. It wont be too bad but this way you only need millivolts from your switches to feed the relays which will send the full 12 volts to the motors rather than needing the full 12 volts from your switches to feed the motors.

Wire the wire coming from the switch that is hot only when the switch is pressed to terminal 86, wire terminal 85 to ground, wire terminal 30 to 12 volts and wire terminal 87 to the motor.
Do the same for both doors. It wont be too bad but this way you only need millivolts from your switches to feed the relays which will send the full 12 volts to the motors rather than needing the full 12 volts from your switches to feed the motors.
#5
It wouldnt be too hard to wire them with a relay. Basically all you want to do is make the switch trip the relay which will then in turn send power to the motors. For example, if you have a relay like this:

Wire the wire coming from the switch that is hot only when the switch is pressed to terminal 86, wire terminal 85 to ground, wire terminal 30 to 12 volts and wire terminal 87 to the motor.
Do the same for both doors. It wont be too bad but this way you only need millivolts from your switches to feed the relays which will send the full 12 volts to the motors rather than needing the full 12 volts from your switches to feed the motors.

Wire the wire coming from the switch that is hot only when the switch is pressed to terminal 86, wire terminal 85 to ground, wire terminal 30 to 12 volts and wire terminal 87 to the motor.
Do the same for both doors. It wont be too bad but this way you only need millivolts from your switches to feed the relays which will send the full 12 volts to the motors rather than needing the full 12 volts from your switches to feed the motors.
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