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11-04-2024, 06:28 PM
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#1 |
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Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,354
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What is this wire for?
Hello
I was looking for my service manual so I can answer this myself but have not been able to locate it. Can anyone tell me what this pink wire is for (circled in blue) ? Thanks!
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RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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11-04-2024, 07:00 PM
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#2 |
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Senior Member
 
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,759
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Re: What is this wire for?
GM always used pink for a switched circuit, should be tied into your ignition
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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11-05-2024, 02:23 PM
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#3 |
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Senior Member
Join Date: Feb 2022
Location: Ca
Posts: 629
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Re: What is this wire for?
Looks like the positive lead for a tach.
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11-05-2024, 03:27 PM
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#4 | |
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Moderator
 
Join Date: May 2007
Location: Southern Cal
Posts: 20,031
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Re: What is this wire for?
Quote:
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1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul |
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11-05-2024, 05:50 PM
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#5 |
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Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,354
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Re: What is this wire for?
Thanks!
__________________
RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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11-08-2024, 07:34 PM
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#6 | |
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Registered User
Join Date: Mar 2014
Location: Pekin, Illinois
Posts: 442
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Re: What is this wire for?
Quote:
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Harley 1969 Chevy C-10 Long Bed, 350cid, 700R4 |
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11-08-2024, 11:03 PM
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#7 |
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Senior Member
Join Date: Feb 2022
Location: Ca
Posts: 629
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Re: What is this wire for?
No. BU light would be a direct wire into the ribbon wire plug at the firewall that runs to the light switch and into main harness. Not connected to the switch but uses the path. The tach wire (pink) is a switched line. It will have a second plug close to the fuse box connector to dazie chain additional options. The aux battery relay trigger uses a pink wire and is supposed to be connected to the unfused terminal towards the right of panel. Stands to reason the tach would go to same pin and dasie chain if both option were on the truck. I am redoing all the wire currently and that seem most logical setup. It's unfused but apparently how it was from factory
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11-10-2024, 02:53 PM
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#8 |
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Registered User
Join Date: Mar 2014
Location: Pekin, Illinois
Posts: 442
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Re: What is this wire for?
Follow the pink wire coming out of the fuse box and see where you see it goes
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Harley 1969 Chevy C-10 Long Bed, 350cid, 700R4 |
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