1990 Ford Ranger Turn signal

DJM76

MEMBER
1990 FORD RANGER
4.0L
V6
4WD
AUTOMATIC
200,000 MILES

If the high beams are on when I have my turn signal on to turn right the windshield wipers go on. I replaced my turn signal switch and it still happens. I just don't get it please help.

Monday, May 19th, 2014 AT 8:33 AM

5 Replies

JACOBANDNICKOLAS

MECHANIC
109,700 POSTS

God lord. That's a new one. For this to happen, there has to be a short to power between the signals and the wipers. My first guess would be in the steering column. Have you taken things apart to see of there is anything that looks damaged or a wire that has worn through and is shorting?

Does this happen if the lights are off and you turn the right signal on?

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Monday, May 19th, 2014 AT 8:48 AM

JACOBANDNICKOLAS

MECHANIC
109,700 POSTS

After I replied, I thought of another possibility. Have you checked grounds? If there is a weak or bad ground, power will take the easiest route to find a ground. It could be through the wiper motor causing it to turn on.

Just a thought. Let me know.

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Monday, May 19th, 2014 AT 8:49 AM

DJM76

MEMBER
11 POSTS

Yes lights can be off. Its only when the high beam is in the on position. I will check everything you suggested. Thank you very much

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Monday, May 19th, 2014 AT 9:26 AM

JACOBANDNICKOLAS

MECHANIC
109,700 POSTS

Let me know what you find.

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Monday, May 19th, 2014 AT 9:54 AM

DJM76

MEMBER
11 POSTS

I checked everything and all grounds are good no bare wires. I'm thinking its just a bad switch or its the wiper motor. I will check the wiper motor. Thank you will let you know what I find.