kcustom73
Stretched it...
I'm on the last stage of my build and was looking at re-installing the wiper motor. Decided to take the motor a part to check its condition (was giving me issues before I parked it) to find out one of the brush holder is completely gone
Wasn't sure what I was going to do, seeing that the 75-77 motors are non-existent and even the 78 and up are getting hard to find. After going to one of the local pick & pull yard to follow up on a lead on Chrysler wiper motor which didn't work out I came upon a 2000 S40 Volvo with an open hood. Having my old wiper motor with me, I compared them in size and they where almost an exact match. So out came the tools and this is what I came home with.
After striping the excess.
After trying to use the original mounting plate, I realized that I needed to shift the main shaft opening over by 5/16" (toward the driver side) and re-drill some new mounting holes.
The old and new mounting plate (old one is underneath)
Also had to trim the windshield frame a bit to clearance for the wiper motor screws.
The fit was still to tight and I couldn't get the wiper cover to seat completely. I realized that the cover was hitting the connector on the top of motor. After some closer examination of the connector I decided to cut most of it off using my dremel. With part of the leads still left over on the back of the connector I soldered some new wires with bullet connectors at the other end.
So with a little digging on the internet I was able to find the wiring schematic for the 2000 S40 Volvo and figured out what each wire from the connector was used for.
light green wire = low speed
red/black wire = high speed
blue/yellow wire = +12v
tan wire = park
dark green wire = ground
After reading Coolerman's webpage on wiper motor/switch wiring I had thing figured out (I taught).
+12v went to + side of my test battery
Light green, red/black and blue/yellow went to the stock switch as shown below
Dark green went to - side of my test battery.
So all I had left to do according to Coolerman's website was to ground out pin 4 on the switch. After hooking up pin 4 to - side of the battery, I got nothing...
So out came the schematics again and figured out that the Volvo motor was not looking for ground on pin 4 of the switch but +12v. So after hooking up a test lead from the + side of my test battery to pin 4 of the Toyota switch, I pulled out the switch to low speed setting and eureka I had a working motor. Next was the high speed setting and again success. Now for the last test was to push the switch back to off and the motor kept spinning until it got to its park position.
I still need to finalize things like running permanent wires, pot the connector to make sure the wire and pins are protected and will need to do something with the connection to the wiper arm (shaft is a little longer then stock), but I think I might have found a replacement motor that works for the 75-77 folks.
(yes I know the wiper motor cover gasket is missing... )
Wasn't sure what I was going to do, seeing that the 75-77 motors are non-existent and even the 78 and up are getting hard to find. After going to one of the local pick & pull yard to follow up on a lead on Chrysler wiper motor which didn't work out I came upon a 2000 S40 Volvo with an open hood. Having my old wiper motor with me, I compared them in size and they where almost an exact match. So out came the tools and this is what I came home with.
After striping the excess.
After trying to use the original mounting plate, I realized that I needed to shift the main shaft opening over by 5/16" (toward the driver side) and re-drill some new mounting holes.
The old and new mounting plate (old one is underneath)
Also had to trim the windshield frame a bit to clearance for the wiper motor screws.
The fit was still to tight and I couldn't get the wiper cover to seat completely. I realized that the cover was hitting the connector on the top of motor. After some closer examination of the connector I decided to cut most of it off using my dremel. With part of the leads still left over on the back of the connector I soldered some new wires with bullet connectors at the other end.
So with a little digging on the internet I was able to find the wiring schematic for the 2000 S40 Volvo and figured out what each wire from the connector was used for.
light green wire = low speed
red/black wire = high speed
blue/yellow wire = +12v
tan wire = park
dark green wire = ground
After reading Coolerman's webpage on wiper motor/switch wiring I had thing figured out (I taught).
+12v went to + side of my test battery
Light green, red/black and blue/yellow went to the stock switch as shown below
Dark green went to - side of my test battery.
So all I had left to do according to Coolerman's website was to ground out pin 4 on the switch. After hooking up pin 4 to - side of the battery, I got nothing...
So out came the schematics again and figured out that the Volvo motor was not looking for ground on pin 4 of the switch but +12v. So after hooking up a test lead from the + side of my test battery to pin 4 of the Toyota switch, I pulled out the switch to low speed setting and eureka I had a working motor. Next was the high speed setting and again success. Now for the last test was to push the switch back to off and the motor kept spinning until it got to its park position.
I still need to finalize things like running permanent wires, pot the connector to make sure the wire and pins are protected and will need to do something with the connection to the wiper arm (shaft is a little longer then stock), but I think I might have found a replacement motor that works for the 75-77 folks.
(yes I know the wiper motor cover gasket is missing... )
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