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Old 06-01-2005, 09:36 PM
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"Modernizing" fusebox/wiring

I have just finished removing and labelling ALL connections and harnesses from both my 66 GMC "project truck" and my 79 GMC C20 454 "donor vehicle".

I can see that there are a LOT of differences in the harnesses (eg. location of front turn signals , standard trans vs automatic , Column ignition vs dash-mounted ... etc) so there's apt to be a lot of re-routing, cutting, splicing, and soldering involved.

So am I nutz to be trying to convert this on my own? I'd like the more modern fusebox and ATO fuses, but the firewall connectors are WAY different. I'm even messing with the idea of cutting and grafting that section of firewall onto my truck ... bad idea?

I was looking at American Autowire's website:
http://www.americanautowire.com/prod..._kits.cfm#CUK4

These guys make a "Classic Update" wiring kit for $449 (USD) that is starting to sound like a pretty good idea ... what has been your experience ... are such kits worth it?

I have a tendency to "cheap out" occasionally , and feel that this $450 might be better spent overhauling the TH400 trans for example.

I did find some good advice in a different thread that I'll be using EITHER way. I think it's worth including as a quote in this message:

Quote:
Originally Posted by '35 Sedan Delivery

...
Lay out the wiring job on a piece of plywood. Put the fuse block in the middle of the board on the side where it will go in the passenger compartment. Then lay out wires in groups (engine compartment left, right; rear left, right; dash left, center,right; etc). Wrap each group of wires temporarily with trash bag ties every six inches or so. Only then start to put them in place in the car. The job will end up a lot neater and easier.

Good luck.

Bill
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Old 06-01-2005, 10:03 PM
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EZ Wiring

I went with EZ wiring at www.ezwiring.com. For $165 you can't go wrong. I know a few guys have used it here on this site also. The wires are labeled every few inches and it ia all NEW, which is a big plus for me. The wiring carries the life blood of your truck, go new.IMHO.
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Old 06-01-2005, 10:10 PM
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Don
does the new fuse box split. a out side and inside because you can manipulated the wires to where ever you want . a 66 gmc cant be that bad not too much to contend with light wipers horn ignition etc. what im saying is its not like there is a bunch of electronic stuff (is there?)

the 1st pis is a connector tool its used to separate old type factory connectors
there is a tap on the female par of the spade to lock it in the insulator
simply work it in until it unlocks
then separate
for reassembly just bend up the tab a little and push it back together i would say this tool works on GM products up to the computer age(i guess)
the fuse box column and all that stuff becomes a lot simpler with it ill have to post the rest of the pics they only allow 3 @ a time

sr66
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Old 06-01-2005, 10:15 PM
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next pics
sorry not the best im just so tickled to ba able to post pictures my wife even said "your actually smiling" man she could have done alot better for herself oh well im not complaining let me know if you have more questions
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Old 06-01-2005, 10:30 PM
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Hi,
Yes ... the 79 fuse box does seperate... but I think it fits into a larger squarish hole on the 79, whereas the 66 has a smaller, round hole in the firewall.

I really haven't studied and pondered it too much yet. I seem to be wandering around a wee bit lost at this point, trying to decide which direction to take

I had a look at the E-Z wiring site. Their fusebox looks more "universal", but the price is much better!
I also noticed that they sell a 6-guage billet aluminum dash insert (made by Boese?) for my truck It would be awesome with those gold Dolphin guages <dreamy sigh>

Yup, I'll be looking for one of those terminal tools. I work at a NAPA store, and don't recall seeing one like that in any of our catalogs. Is there a brand name?

Thanks fellas,
Don
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