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1989 GMC Medium Duty - Wiring Diagrams

1989 GMC Medium Duty - Wiring Diagrams

Postby LB » Tue Aug 30, 2011 9:55 am

1989 GMC medium duty truck (3 ton) in need of wiring diagram for the brake lights. Help would be much appreciated.. Thank you :)
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Re: 1989 GMC medium duty / need of wiring diagrams

Postby Tim Martin » Tue Aug 30, 2011 10:09 am

The Medium Truck Subscription might have it.
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Re: 1989 GMC medium duty / need of wiring diagrams

Postby LB » Tue Aug 30, 2011 10:10 am

Sadly we do not have it here, this is the first time I have had to look anything up for something this size. Customer pulled in with no brake lights.. trying to help them out. Not the size of vehicle to be on the streets with no brake lights. I was hoping someone here may have access to them.
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Re: 1989 GMC medium duty / need of wiring diagrams

Postby liljoe » Tue Aug 30, 2011 10:15 am

Call product support, they will fax you the info you need. Great people.....
Working hard to prove the Green Team can do it with the best of 'em.
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Re: 1989 GMC medium duty / need of wiring diagrams

Postby LB » Tue Aug 30, 2011 10:54 am

I have a call into them. thank you for that suggestion, totally forgot about them.
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