If it is wired correctly and none of the wires is shorted to ground, then the most likely scenario is that the motor is shorted. I guess it could be a short in the switch, but I have never seen that happen.
wiper motor wiring
- Thread starter fjoakley
- Start date
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It seems like it would be a fairly simple next step to pull the motor housing off and check to see if the blue (L) wire is chaffed or otherwise grounded.
- Thread starter
- #24
Never could get it to work properly to go back to the park position. I reworked the switch, tried every wire combination and just could not figure it out. I am guessing there is a short in the motor and I have not had time to lookj into that so I removed the plunger and now to get it to stop in the right spot is is good timing on my behalf.
Greg
Greg
Thanks for the quick reply. As I've mentioned I'm having the same issue.
My motor works, I'm just blowing a fuse every time the return circuit is energized. I have placed a piece of tape between the contacts (L and LB) on the motor and I'm not blowing fuses. My switch positions now behave like this when I prohibit L and LB from contact.
Off position- motor works on "low"
First position- motor is off
Second position- motor on "high"
(with no 'park' of course)
I've checked the wires and so far I find none grounded or shorting out to one another, Switch and contacts cleaned etc.
I think I'll isolate the problem when I understand the 'park' process. One thing illudes my superior intelect... how does the connection (L and LB) disable the motor at the top of the stroke (park position). Whenever my L and LB contact one another the fuse blows. I did rebuild my harness and I could have wired up the switch connector wrong.
Fresh look at it tomorrow!
My motor works, I'm just blowing a fuse every time the return circuit is energized. I have placed a piece of tape between the contacts (L and LB) on the motor and I'm not blowing fuses. My switch positions now behave like this when I prohibit L and LB from contact.
Off position- motor works on "low"
First position- motor is off
Second position- motor on "high"
(with no 'park' of course)
I've checked the wires and so far I find none grounded or shorting out to one another, Switch and contacts cleaned etc.
I think I'll isolate the problem when I understand the 'park' process. One thing illudes my superior intelect... how does the connection (L and LB) disable the motor at the top of the stroke (park position). Whenever my L and LB contact one another the fuse blows. I did rebuild my harness and I could have wired up the switch connector wrong.
Fresh look at it tomorrow!
- Thread starter
- #26
that is exctly what happened to mine. Everytime the little plunger pushed the two contacts together it blew a fuse. I could not figure it out as well. Let me know what you find because it sounds like we have a simular issue. However, when I took out the plunger so it did not push the contacts together mine still works correctly with the switch position I just do not have park.
Going back to the WB dashed line and you all said its a ground. In the diagram it shows that its connectied to the headlights - is that actually the case? My chasis is getting power somehow and I think its a bad ground somewhere...have narrowed it down and think its something to do with this WB wire as when I pull my wiper motor swith the chasis goes from negative ground to positive.
I wanted to interject what is really going on with this wiper set up. I have been working through a rewire and trying to get rid of the factory (old) unavailable switches or expensive. The park circuit is separate switch grounding one side at wiper motor (i believe at this moment). Going to repost with a resolution using a common switch. Probably going to need to use a relay. Going to dig exactly what is going on in the motor.
The factory switch is this
Position one "off" = LW shorted to LB
Position two "low" = LB shorted to ground (WB)
Position three "high" = LR shorted to ground (WB)
Continuing investigation......
The factory switch is this
Position one "off" = LW shorted to LB
Position two "low" = LB shorted to ground (WB)
Position three "high" = LR shorted to ground (WB)
Continuing investigation......
James Madigan
SILVER Star
I had coolerman make me a harness for the wipers .For like $25 bucks and i hooked it up and it worked perfect.
Engineer8000
SILVER Star
These wiper motors are wired to switch on the ground side as shown. This is opposite of modern wipers. The park switch applies B+ to the normally grounded side of the low speed winding to brake the motor. If you find your wipers don't park correctly, it could be the park switch is gunky.
