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1991 D250 turn signal issue. #2016960
02/21/16 11:32 PM
02/21/16 11:32 PM
Joined: May 2004
Posts: 394
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dusterguy Offline OP
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dusterguy  Offline OP
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My newly acquired D250 truck has no rear turn signals. Fronts work as normal. I don't want to probe holes in the wires to test for power in the main harness coming out of the firewall. Is there a good way to test the multi-function switch? Any help would be appreciated.

Re: 1991 D250 turn signal issue. [Re: dusterguy] #2016963
02/21/16 11:35 PM
02/21/16 11:35 PM
Joined: Jan 2003
Posts: 32,930
Grand Prairie,Texas
stumpy Offline
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stumpy  Offline
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Grand Prairie,Texas
Do you have brake lights?

Re: 1991 D250 turn signal issue. [Re: stumpy] #2018029
02/23/16 01:40 PM
02/23/16 01:40 PM
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dusterguy Offline OP
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No. No power for brake lights either.

Re: 1991 D250 turn signal issue. [Re: dusterguy] #2019953
02/26/16 01:29 AM
02/26/16 01:29 AM
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Posts: 18,419
UPPER MICHIGAN, MARQUETTE COUN...
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NITROUSN Offline
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Originally Posted By dusterguy
My newly acquired D250 truck has no rear turn signals. Fronts work as normal. I don't want to probe holes in the wires to test for power in the main harness coming out of the firewall. Is there a good way to test the multi-function switch? Any help would be appreciated.


Just slide a paper clip or cotter pin into the connector along side the wire and test for power.







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