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Interiors, Dash, Lights and Electrical Everything Inside

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  #11  
Old November 19th, 2013, 01:16 AM
BarryGMC BarryGMC is offline
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Default Re: Electrical gremlins have got me - help?

If you all want I can dig up the pieces and post comparison pics so you can see the difference. BLC
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  #12  
Old November 19th, 2013, 01:29 AM
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Default Re: Electrical gremlins have got me - help?

Barry: I am interested in seeing the difference between the Chev and GMC signal switch cups, etc.
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  #13  
Old November 19th, 2013, 01:33 AM
BarryGMC BarryGMC is offline
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Default Re: Electrical gremlins have got me - help?

In the next couple of days I will pull it all out and put up the pics. Barry
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  #14  
Old November 19th, 2013, 04:44 AM
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Default Re: Electrical gremlins have got me - help?

Another way is to replace the GMC signal cup with one from a Chevrolet. I know they are fellows that will moan at this suggestion, have you ever tried to find one for a GMC ? it's like slim and none and slim just left town, but good luck anyhow and anywhere you look for one..Vernski
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  #15  
Old November 19th, 2013, 07:23 PM
BarryGMC BarryGMC is offline
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Default Re: Electrical gremlins have got me - help?

here are the 2 side by side. The white one with the plastic switch is Stock chevrolet. The fawn colored one is stock GMC. Notice that the Chevy one uses sheet metal screws and the GMC one uses machine screws. Also the switch arm is shorter on the chevy. These cups and switches are interchangeable between makes. So chevy cup with chevy repop switch is a direct replacement with no mods. This only applies to some 63 and all 64-66. Barry
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  #16  
Old November 20th, 2013, 01:44 AM
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Default Re: Electrical gremlins have got me - help?

Here is a link for one to fit 64-66 GMC finding the right one for a 63 will drive you nuts I know it's not out there unless you find a oem part for a 63 that someone may have. Well heck fix it anyway you wish only you will know it's not oem was my point I used the Chevrolet cup and turn signal arm was just a suggestion and so on my 65 it works great..Vernski
http://www.classicparts.com/1963-Tur...fo/53-507A/#.U
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  #17  
Old November 20th, 2013, 02:32 AM
BarryGMC BarryGMC is offline
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Default Re: Electrical gremlins have got me - help?

The bolt pattern is the same but the wires come out in the wrong spot. So those 64-66 gmc repop switches are not drop in. Tighten up the screws and snap goes the Ben Franklin. Penny saved is a penny earned. Barry
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  #18  
Old November 20th, 2013, 02:37 AM
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Default Re: Electrical gremlins have got me - help?

The 63 shares a switch with international trucks from the 60's. This used to be easy to find. But like most things it's harder now. I have a few and still find them on occasion. Maybe once a year or so. Barry
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  #19  
Old November 20th, 2013, 03:44 AM
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Default Re: Electrical gremlins have got me - help?

Thanks for the detailed images, Barry. Wish I was aware of this stuff a little earlier in life.
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  #20  
Old November 20th, 2013, 08:27 PM
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Default Re: Electrical gremlins have got me - help?

Man, I had no idea the cups, signal arms and switches were different - I knew the GMC used a pontiac-style cancel cam, but this is great information to know - I deeply appreciate everyone's responses, and thank Barry for these great detail pictures
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