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04-01-2023, 07:06 PM
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#1 |
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Registered User
Join Date: Jan 2005
Location: Brier Washington
Posts: 121
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What is this wire for?
What is this wire for. It’s brown and goes through the bottom left space on the firewall plug. My truck is a 1972 GMC with a 3 hole gauge cluster.
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04-01-2023, 07:20 PM
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#2 |
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Senior Member
 
Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,948
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Re: What is this wire for?
72 service manual wiring diagram shows 20 brn/wht wire in that position for TCS, transmission controlled spark system. I think I see a faded white stripe on that.
http://67-72chevytrucks.com/vboard/s...d.php?t=558016 |
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