Engine harness interchange question
Thread Starter
Race Director
Joined: Jul 2004
Posts: 12,704
Likes: 329
From: Scottsdale Arizona
Engine harness interchange question
Just back from holidays and I'm ready to go!
I need to change my engine wiring harness. It's a mess and now I've got several shorts from deteriorated insulation.
I've got a 73 auto with air, but I'm also converted to HEI. My question is should I just get the engine harness for a 75 automatic with air? I've looked at the wiring diagrams and it looks like even the colors are the same. At least this way, I'll have the correct connector and wire for the distributor.
Good idea or bad?
I need to change my engine wiring harness. It's a mess and now I've got several shorts from deteriorated insulation.
I've got a 73 auto with air, but I'm also converted to HEI. My question is should I just get the engine harness for a 75 automatic with air? I've looked at the wiring diagrams and it looks like even the colors are the same. At least this way, I'll have the correct connector and wire for the distributor.
Good idea or bad?
Thread Starter
Race Director
Joined: Jul 2004
Posts: 12,704
Likes: 329
From: Scottsdale Arizona
"I wouldn't"
Funny enough, they don't offer an HEI version. I suppose that it's simple enough to not be worth the bother.
Safety Car
Joined: Dec 2005
Posts: 4,270
Likes: 20
From: Central Michigan
Go ahead and get the right harness, and ask if they'll sell the HEI plug separate. If not, M.A.D. has them, as well as the right crimp connectors that plug into the bulkhead connector. Did this with my 68
Burning Brakes
Joined: Mar 1999
Posts: 1,047
Likes: 3
From: CA
I purchased the harness for my 71 and then replaced the wire from the bulkhead to the distributor with this wire from Year One. You want to replace the original wire because it contains the resistor that drops the voltage on your points distributor. http://www.yearone.com/serverfiles/h...G55790&Style=2 Part number L00510. Less than $10.
Last edited by 71406; Aug 21, 2007 at 05:46 AM.
Thread Starter
Race Director
Joined: Jul 2004
Posts: 12,704
Likes: 329
From: Scottsdale Arizona
I purchased the harness for my 71 and then replaced the wire from the bulkhead to the distributor with this wire from Year One. You want to replace the original wire because it contains the resistor that drops the voltage on your points distributor. http://www.yearone.com/serverfiles/h...G55790&Style=2 Part number L00510. Less than $10.
Got the wire from Year One and the harness should be here on Saturday (they sent me the wrong one the first time). Which wire does this replace? The one for the positive on the coil?
Burning Brakes
Joined: Mar 1999
Posts: 1,047
Likes: 3
From: CA
Yes, it replaces the wire that went to the positive side of the coil. It will be an easy change since you will have the new harness in front of you. Good Luck.
Smithers
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