Testing headlamp wiper motors off the car

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Brian28
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Post Thu Aug 03, 2006 10:03 pm

I have three sets in the garage, some worked, some didn't, now they are all mixed up. There are 4 wires in the plug, which ones do I run a pos and neg to to test the motors?

Thanks
Brian
For sale - E30 320i racer project - sold.
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Brianmoooore
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Post Fri Aug 04, 2006 12:12 am

Brown wire is earth (negative).
Apply 12V+ to the red wire and the motor should run continuously.
Apply 12V+ to the black wire and, once the motor has moved away from it's parked position, it will run untill it has completed its sequence.
The fourth wire is only fitted to right hand (?)side motors, and controls the washer pump.
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Brian28
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Post Fri Aug 04, 2006 6:36 am

Thanks fella
For sale - E30 320i racer project - sold.
e30bmlover
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Post Fri Aug 04, 2006 6:42 am

Brianmoooore wrote:Brown wire is earth (negative).
Apply 12V+ to the red wire and the motor should run continuously.
Apply 12V+ to the black wire and, once the motor has moved away from it's parked position, it will run untill it has completed its sequence.
The fourth wire is only fitted to right hand (?)side motors, and controls the washer pump.
you amaze me brian! how the hell do you know so much about e30's? you should work for bmw mate, some people give advice but you even tell people the colour of the wires! i have a new hero. you are a credit to the zone(sorry to hijack the thread)
A1BMW325iSport
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Post Fri Aug 04, 2006 10:14 am

he's the electrical guru :cool: