Hi Fraze,
Welcome!
I'm just getting started on here myself and certainly NOT going to be able to help you as much as others on here, but let me share some advice I'v been given.
Check all ground wires!!!
Do you like to fix stuff yourself?
From what I have heard, bad grounds are the number one problem. The wires can look great, but the rust build up or a loose connection can really mess with you. And if you skip over a ground issue, you will hate yourself in the long run. $$$
It requires a bit of digging around, but once you eliminate a lack of ground being the problem, you can start checking other things. And it's FREE. LOL