Wire Harness interchangability
Melting Slicks
Joined: Aug 2001
Posts: 3,039
Likes: 121
From: Wichita KS
The Lectric Limited harnesses are great. The wire harnesses' (thickness, length, stripes, colors) and connectors look the same as the original harness. Just unplug the old harness and plug in the new LL harness - worked easy for me.
Melting Slicks
Joined: May 2004
Posts: 2,084
Likes: 1
From: Aussie expat in Saudi Arabia
I don't know if there's any difference, but we were talking about Corvette harnesses when LL told me that...
I am still an electrical super conductor and my refurb'd dash harness from LL looks great
Le Mans Master
Joined: Aug 2003
Posts: 7,720
Likes: 12
From: Chattanooga TN
To answer the initial question:
Every year is slightly different in pin location-especially at the bulkhead. It is possible to plug different year harnesses together, but without moving wires they won't work. For example in my '69 I used a used '72 instrument harness and new engine harness. To keep the fiberoptics I bought a new '69 forward lamp harness and moved the connectors to mate to the '72 fusebox. I believe the rear lamp harness is the same '68-'71. It is possible to use any '69-'76 complete car harness if you account for turn signal fixtures, fiberoptics, center cluster (seatbelt lamp) and options. In '77 the connectors on the center cluster and a/c controls changed dramatically-maybe the bulkhead too.
I also echo that 'Lectric Limited makes great harnesses and Last Detail has the best prices on them.
Every year is slightly different in pin location-especially at the bulkhead. It is possible to plug different year harnesses together, but without moving wires they won't work. For example in my '69 I used a used '72 instrument harness and new engine harness. To keep the fiberoptics I bought a new '69 forward lamp harness and moved the connectors to mate to the '72 fusebox. I believe the rear lamp harness is the same '68-'71. It is possible to use any '69-'76 complete car harness if you account for turn signal fixtures, fiberoptics, center cluster (seatbelt lamp) and options. In '77 the connectors on the center cluster and a/c controls changed dramatically-maybe the bulkhead too.
I also echo that 'Lectric Limited makes great harnesses and Last Detail has the best prices on them.
Thread Starter
Racer
Joined: Jun 2007
Posts: 274
Likes: 2
From: Finger TN
The bidder you beat out earlier today on the used 1974 Main Dash Harness (GM calls it an Instrument Panel or IP harness) was me! I had no idea until I read this thread tonight.
That harness looks real good in the picture. It will definitely work for you. Be aware that not all IP harnesses are the same. In 1979 the basic IP harness had about 180 wires in it but there was a second harness that supported options and it had over 200 wires. I don't know the numbers for the '74 model but the principle would be the same.
That harness looks real good in the picture. It will definitely work for you. Be aware that not all IP harnesses are the same. In 1979 the basic IP harness had about 180 wires in it but there was a second harness that supported options and it had over 200 wires. I don't know the numbers for the '74 model but the principle would be the same.
Thanks
Advanced
Joined: Mar 2007
Posts: 52
Likes: 0
I am having same problem
I bought a 1974 tilt column on this site cant get it to fit 1972 plug in not the same any answers would be great thinking about switch plug but not sure colors are different on them 4 wire one side 6 the other different colors thought any answers www.jerrywhynot@yahoo.com or ph 734-250-1066
thanks for help jerry
thanks for help jerry
