Originally Posted by Hokie 335i
What I may do is just buy the direct wire kit for the 8500 from ebay. it's $13 shipped and then i'll have some bigger wires to work with and i won't be guessing which phone wires are the right ones to be using! should have done this in the first place, but i got my car on friday and wanted to knock out all my DIYs in one weekend. The M-shift knob and M-wheel went SO easily that something had to go wrong with the last DIY. Oh well, lessons learned. Luckily I can just cut off the crimp and still reuse my mini fuse adapter.
Honestly this is the way to go. You can find them for like $10 on fleabay.