Lights flicker and gauge jumps around???

Darthomas said

Do what you like, but when you do your own engineering, you're also on your own when things don't work as you expect.
Taking care of things and understanding how they are supposed to work is just too difficult, just spray a bunch of new at it, that'll fix EVERYTHING!

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My car went out of warrantee a long time ago, and believe me I can make things work how I want. :D
There isn't a damn thing difficult about understanding any of it, and that's part of the problem.
I fully understand how it was originally designed and the way it was designed falls short of what I want out of my car, so I change it.
You are just too new here to know me or my car. :D