difference between wiper motor wiring on 1968 biscayne and bel-air. bel air motor has an extra yello

35

Asked by Oct 23, 2007 at 08:52 PM about the 1968 Chevrolet Biscayne

Question type: Maintenance & Repair

i got a used wiper motor off a 1968 bel air and tried to install it on my 1968 biscayne and the bel air motor has an extra male flat connector wire slightly above the main 3 wire connector . new motor won't work .2 yellow wires came attached to the motor when i received it . unknown function or hook-uip point

3 Answers

45,275

This motor may yet work but may require splicing or cutting some original wiring. The aftermarket ones are like this, the GM vehicles of various years sometimes have different color or arrangement of wiring harnesses. I would think perhaps the Bel-Air wire might be for variable speed wipers or perhaps something with the switch.

355

1968 Chevy's had 3 wires going to the wiper motor, a blue, yellow and a black. There was also two wires that went to the w/s washers, a yellow with black stripe and a black. If this new wiper motor contains a washer unit and the old one didn't, then use a test light or ohm meter to test the wiring for current as you move the switch from off to 'on low' and 'high'. Was the other motor one or two speed wipers? Then try pushing the washer switch 'on' and check for power. Check the wiring diagram which can be found on autozone.com web site. Yellow is the power wire, yellow/black is switched power, black is ground, blue is speed. See attached 67 Wiring diagram

2 of 2 people found this helpful.
355

Here is a line drawing for this set up. Hope this helps.

1 of 1 people found this helpful.

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