I am a retired Electronics Tech. I have started restoring a 87 Suzuki Samurai that I want to add some electronics to, I have way more questions than answers
@rwilkinson38 Welcome to the forum. I have done a lot of work on my 42ft RV which is also a 12V platform like your car so I might have some insight. When you are ready post your questions in the appropriate forum/sub-forum.
First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, and 360, fairly knowledge in PC plus numerous MPU's and MCU's
Major Languages - Machine language, 360 Macro Assembler, Intel Assembler, PL/I and PL1, Pascal, Basic, C plus numerous job control and scripting languages.
My personal scorecard is now 1 PC hardware fix (circa 1982), 1 open source fix (at age 82), and 2 zero day bugs in a major OS.