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Old 01-15-2015, 12:54 AM   #276
w00dst0ck
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Re: Color Wiring Diagram FINISHED

For all the guru's, PO put a HEI in my '70. It's wired to the 12P, but it's constant hot for some reason. Put a new ignition switch in the truck and still the same issue. Traces back all the way to the switch. Also currently the unfused ignition slots and the fuse above are constant hot.

Any suggestions? I'm tempted to just run another switched power wire, but that doesn't explain why I'm getting a constant hot.
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Old 06-04-2015, 12:36 PM   #277
HoustonGuy
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Re: Color Wiring Diagram FINISHED

can someone email me a copy? cavazosmark@hotmail.com
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Old 08-25-2015, 01:14 PM   #278
asesapie
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Re: Color Wiring Diagram FINISHED

The diagrams are great but they aren't for a GMC with the four eyes up front and AC. Anyone have a diagram for a '68 GMC with factory AC?
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Old 09-30-2015, 01:22 PM   #279
onetonwrecker
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Re: Color Wiring Diagram FINISHED

Hey could I get an email of the larger version please chris_san2011@yahoo.com
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Old 09-30-2015, 03:07 PM   #280
jimbosprint
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Re: Color Wiring Diagram FINISHED

I spent some time (a lot of time actually) re-drawing this in Adobe Illustrator so everything would be easier to read. There are a couple minor edits based on what I have found in my two trucks.

Send me a PM with your email address if you would like me to send it to you.

Name:  67-72ChevyTruckWiring_thumb.jpg
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Name:  67-72ChevyTruckWiring_detail.jpg
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Old 10-01-2015, 02:24 AM   #281
sharkskinman
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Re: Color Wiring Diagram FINISHED

Email me the actual files??
Spoonpappy@gmail.com
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Old 10-23-2015, 04:42 PM   #282
70gmc4d
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Re: Color Wiring Diagram FINISHED

Quote:
Originally Posted by boundstaffpress View Post
V8 engine and cab


Link for the largest version
4200x2550
I don't see the three wires to the trany. I see the one green and one black to the reverse switch. My 70 GMC has three wires, dark green and light green to the switch and the black wire I just assume is a ground. But you know what they say about assuming. Thanks for the diagram it helps a ton!
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Old 10-24-2015, 02:48 PM   #283
chuchito
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Re: Color Wiring Diagram FINISHED

I have a 1972 GMC suburban, and the wiring is driving me crazy. The diagrams I found on here look similar to what I see under the hood but not exactly. Also, I don't see the blue wire that is supposed to be to the oil pressure on my harness but my guage cluster does have a oil pressure guage. The engine harness actually only has 5 wires. I unplugged it and looked at the female plug on the firewall and it also only has 5 inserts. The five wires I have are the tan, dark green, purple,pink, and brown with white. Can someone chime in?
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Old 11-02-2015, 03:11 PM   #284
TOYDOC
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Re: Color Wiring Diagram FINISHED

Thank you for taking the time to make a diagram like this! if possible could you e-mail me a copy at ctoydoc@gmail.com

Thank you!!
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Old 11-02-2015, 03:32 PM   #285
70gmc4d
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Re: Color Wiring Diagram FINISHED

Quote:
Originally Posted by chuchito View Post
I have a 1972 GMC suburban, and the wiring is driving me crazy. The diagrams I found on here look similar to what I see under the hood but not exactly. Also, I don't see the blue wire that is supposed to be to the oil pressure on my harness but my guage cluster does have a oil pressure guage. The engine harness actually only has 5 wires. I unplugged it and looked at the female plug on the firewall and it also only has 5 inserts. The five wires I have are the tan, dark green, purple,pink, and brown with white. Can someone chime in?
My 70 GMC has a mechanical oil pressure gauge that is plumbed in the block next to the distributor. And the 70 gmc has 4 headlights up front.
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Old 11-02-2015, 10:43 PM   #286
chuchito
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Re: Color Wiring Diagram FINISHED

Quote:
Originally Posted by 70gmc4d View Post
My 70 GMC has a mechanical oil pressure gauge that is plumbed in the block next to the distributor. And the 70 gmc has 4 headlights up front.
Maybe that's how mine is too. There is a metal line that looks like it would go next to the distributor.
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Old 11-09-2015, 10:15 AM   #287
70gmc4d
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Re: Color Wiring Diagram FINISHED

Quote:
Originally Posted by 70gmc4d View Post
I don't see the three wires to the trany. I see the one green and one black to the reverse switch. My 70 GMC has three wires, dark green and light green to the switch and the black wire I just assume is a ground. But you know what they say about assuming. Thanks for the diagram it helps a ton!
Just a heads up I'd anyone else had the same issue. I did ground the black wire to the fire wall and when I fired up my truck this weekend the backup lights work awesome.
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Old 12-05-2015, 01:46 AM   #288
DBear
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Re: Color Wiring Diagram FINISHED

on this diagram, is the alternator on the driver side, labeled " A.C.F GEN R....or something like that?
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Old 12-05-2015, 01:54 AM   #289
DBear
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Re: Color Wiring Diagram FINISHED

I too would like one emailed to me at twbailey75@yahoo.com. Thanks
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Old 03-10-2016, 10:04 AM   #290
oneshot
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Re: Color Wiring Diagram FINISHED

Would you email me the files-oneshot@lakeland.ws.
Thank you,
Scott
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Old 03-20-2016, 03:39 PM   #291
flykelley
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Re: Color Wiring Diagram FINISHED

Hi Can you please email me a copy also?

flykelley930@mac.com

Thanks Mike
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Old 04-12-2016, 04:07 PM   #292
cagodinez
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Re: Color Wiring Diagram FINISHED

Can you please send me a copy at
alonzo_51@yahoo.com

THANK YOU!
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Old 04-14-2016, 12:06 AM   #293
jrock51
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Re: Color Wiring Diagram FINISHED

can I get a copy as well please?
justin_heil@hotmail.com
Posted via Mobile Device
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Old 04-14-2016, 11:41 PM   #294
rsgt
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Re: Color Wiring Diagram FINISHED

I would like one please. fgsltwthg@aol.com
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Old 04-26-2016, 07:05 PM   #295
Foot Stomper
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Re: Color Wiring Diagram FINISHED

Just scanned the pages looking for a wiring diagram for the 1959 GMC.
Does anyone have? I might even make a Chevy one work too...
TIA
__________________
So when is this "Old enough to know better" supposed to kick in?

My 1959 GMC build thread http://67-72chevytrucks.com/vboard/s...d.php?t=686989
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Old 07-17-2016, 09:52 AM   #296
Jaik
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Re: Color Wiring Diagram FINISHED

Does anybody have a diagram for a 57 apache? I bought a new harness with updated fuse box kit. Ive got the basics hooked up. The motor runs again. I can figure it out but a reference would make it easier.
Thanks guys
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Old 08-22-2016, 01:33 PM   #297
cpnbnanamn
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Re: Color Wiring Diagram FINISHED

Did a high-res version ever get posted anywhere? Also, can I assume the diagram is the same regardless of the engine?
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Old 11-18-2016, 10:34 PM   #298
396C-10
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Re: I suck at reading wiring diagrams..

Quote:
Originally Posted by Rocmonkey View Post
I have read a bunch of your posts/replies and DANG! you are one smart feller! I wish I knew 1/10 of what you know just about wiring. Thanks for the advice- I've been using it secretly (or, trying to).
........... Meee Toooo!
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Old 12-14-2016, 12:00 AM   #299
garciajulian
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Re: Color Wiring Diagram FINISHED

Can I get a digram to Please sent to garciajulian@grandecom.net Thanks
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Old 12-24-2016, 10:28 PM   #300
BronzeGMC
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Re: Color Wiring Diagram FINISHED

Please copy sent andy.j.bock@gmail.com
Thank you
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