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Because my car is a daily driver and I've owned it for 23 years and plan to continue driving it for many more years I wanted to prepare for regular maintenance and future repairs. I made notes of all the changes I made during my swap. I had unfortunately procrastinated undertaking the huge task of compiling all of my notes, charts and diagrams into a wiring diagram for my car. It took several months but I finally completed the diagram. I have attached it to this post.
Unless I have unintentionally left something out, this includes every wire I modified, changed, spliced or added on the car. I did not notate anything that was original to the car and was not modified. This build is a 2004 LM7 into a 1978 Caprice. It is essentially a stock swap and was built to be a reliable daily driver and was not focused on performance. Maintaining functionality of all of the key features like cruise control and computer controlled A/C was a main focus as well as practical serviceability. As a result, over-the-counter parts-house parts with an indexed part# were used as much as possible. I did not figure any of this out on my own and owe everything in my swap to the people on this site that helped me with advice and figured things out ahead of me. Further specifics can be found at the build thread for the car located at this link: 1978 Caprice 5.3 Build Thread
Last edited by Vetteman61; Feb 7, 2021 at 09:38 PM.
LT1Swap.com is a very great resource and was very helpful to me, however it doesn't actually contain everything used in the diagram. Much of that was figured out by people on this site.
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Wiring Diagram of LS Swap 
