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Old 10-27-2017, 12:57 AM   #1
cosmocat
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1978 gmc suburban wiring/fuse box swapping out with 1987 wiring/fuse box

hello, I'm working on my 1978 gmc suburban, and I want to replace the wiring/fuse box with a better one. I have one off of a 1987gmc suburban that I got from a junk yard. I am adding lots of up dates to my suburban and want a fuse box that has more space to accommodate the up dates. I have most of it labeled but cant find a proper wire diagram to identify every wire....

Does any one have wire diagrams for a 1987 GMC suburban???
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Old 10-27-2017, 12:32 PM   #2
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Re: 1978 gmc suburban wiring/fuse box swapping out with 1987 wiring/fuse box

Quote:
Originally Posted by cosmocat View Post
hello, I'm working on my 1978 gmc suburban, and I want to replace the wiring/fuse box with a better one. I have one off of a 1987gmc suburban that I got from a junk yard. I am adding lots of up dates to my suburban and want a fuse box that has more space to accommodate the up dates. I have most of it labeled but cant find a proper wire diagram to identify every wire....

Does any one have wire diagrams for a 1987 GMC suburban???
Here are a couple for an 86 C-K, I have some for an 88 but I think they are different after 87.


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Old 10-27-2017, 02:58 PM   #3
cosmocat
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Re: 1978 gmc suburban wiring/fuse box swapping out with 1987 wiring/fuse box

Awesome thanks
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Old 10-28-2017, 04:30 PM   #4
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Re: 1978 gmc suburban wiring/fuse box swapping out with 1987 wiring/fuse box

I guess the one I'm really looking for is called a wire tracer diagram
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