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AFI electric windshield motors

blue 74

New Member
Joined
Jan 5, 2017
Messages
20
Loc.
San Diego
Reaching out to anyone who can give me some guidance. I have two AFI electric windshield wiper motors from Toms Bronco parts. I installed them a while ago and the wiper on the passenger side operates perfect and stops in the correct position but the drivers side always stops out of alignment. I have opened up the unit and attempted to rotate the timing wheel but every time I get them aligned up the drivers side goes out of alignment after 10 cycles or so. It seems like one of the motors is just a bit slower than the other one. Has anyone else had this issue? Or know of a fix? Confused, please help
 

BUCKWILD

Sr. Member
Joined
Jun 20, 2016
Messages
355
Loc.
Butte county
if i remember corectly you have to put diodes inbetween the two motors in rhe power wires. ill look to se if i have the paperwork on that
 

BUCKWILD

Sr. Member
Joined
Jun 20, 2016
Messages
355
Loc.
Butte county
you need a NTE576general purpose rectifier between the two motors on both the low and high speed power wires. Put them between the two motors with the - mark or band towards the motor on the passenger side. you will need two of them one for each wire
 
OP
OP
B

blue 74

New Member
Joined
Jan 5, 2017
Messages
20
Loc.
San Diego
Thanks, for the info. You would think that Toms'Bronco would tell you that info in the directions
 

ared77

Contributor
Bronco Guru
Joined
Apr 21, 2013
Messages
3,178
Does this really work? Be great if it does! And will this make them move together, synchronized, without having to install the $200 rectangle switch??
 

SHX669

Bronco Guru
Joined
Jan 9, 2009
Messages
1,997
Does that "timing wheel " you're adjusting affect the alignment of the wiper arms ?
You'll never get two motors with separate power sources to synchronize { TBPs even says " non synchronized wiper motors " } .
I'd set the wiper arm alignment/swipe where you want it and then either forget about it or
go with one of the suggested ways to synchronize em.
 
OP
OP
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blue 74

New Member
Joined
Jan 5, 2017
Messages
20
Loc.
San Diego
the timing wheel has four different positions for the arm that attaches to the wiper. Each spot is a bit different and will effect the timing of the wiper blade. I have tried positioning my driver side in a slower timing slot to compensate for it being a faster motor. None of the timing position slots makes it right. Each time I let the wipers run and when I turn them off the passenger side comes to a stop in the perfect position and the drivers side stops in the middle of the windshield. I have also tried adjusting the position of the blade itself and that also doesn't work. If I let the motors run for approximately 35-40 revolutions, the blades align and then shortly after they begin to go out of alignment which is what led me to believe that one motor is just a bit slower than the other. What is a $200 dollar rectangle switch? Will that sold my issue?
 

twisted 66

Contributor
Sr. Member
Joined
Oct 30, 2008
Messages
456
Loc.
Norcal-Tracy
There is a thread here from a member called badmuttstang. He uses a cole hearse switch and it fits in factory spot and can use factory knob. It will sync, park and everything. Do not have the link to it but you can search for it.
 
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