C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

wiring to ac compressor question

Thread Tools
 
Search this Thread
 
Old Jul 8, 2014 | 10:31 PM
  #1  
beautimus's Avatar
beautimus
Thread Starter
Advanced
 
Joined: Aug 2012
Posts: 95
Likes: 0
From: Woodstock Alabama
Default wiring to ac compressor question

I have a 74 coupe that I am trying to get back together.
the plug that goes on the compressor clutch has a green wire that goes to the pressure switch plug. the other side of the pressure switch plug has the wire missing. there is a tan wire about 14 ga. that is
dangling out of the harness over near the evaporator box. could that be the wire that I am looking for?
I have a wiring diagram that I bought and had each sheet blown up to poster size. but It does not cover the ac. (can you believe it?)
if someone can look at their ac setup and check it out I would appreciate it. thanks in advance, tony
Reply
Old Jul 9, 2014 | 12:49 AM
  #2  
dugsgms74's Avatar
dugsgms74
Burning Brakes
10 Year Member
 
Joined: Mar 2014
Posts: 904
Likes: 46
From: Crestline CA
Default

According to my 74 corvette a/c wiring diagram the two wires on the clutch are the dk. green one and a black one, the black one goes to ground. The only tan wire I see in the diagram goes to the discharge pressure switch and is in the same connector that the dk. green comes from before going to the compressor clutch.

BTW, my info comes from mitchell on demand vintage and sometimes thier info is suspect.

Last edited by dugsgms74; Jul 9, 2014 at 12:57 AM.
Reply
Old Jul 9, 2014 | 12:51 AM
  #3  
Peterbuilt's Avatar
Peterbuilt
Le Mans Master
15 Year Member
 
Joined: Aug 2006
Posts: 7,426
Likes: 1,559
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Default

Yes, that sounds like the correct wire.
Mine has the white square paper on it to help you find it.


Reply
Old Jul 9, 2014 | 05:12 AM
  #4  
beautimus's Avatar
beautimus
Thread Starter
Advanced
 
Joined: Aug 2012
Posts: 95
Likes: 0
From: Woodstock Alabama
Default

Woohoo ! thanks guys , that's exactly what I needed to know! thanks so much for the info!!!!
Reply

Get notified of new replies

To wiring to ac compressor question





All times are GMT -4. The time now is 01:15 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE