Do you have to run a separate power?

Theres a Entire write up, on what to use and what all you need in the Stereo/Audio section! I looked cant find the Thread, sorry...:blush:

I did a write up on how I did it. I'll try and find the link. It was actually pretty easy! No separate power or cutting into the stock wiring harness. Everything is a straight plug and play. Except for landing a ground. The amp was even small enough to fit behind the head unit.

I was looking as well. I found the one by Propellerhead which gives me clarity but I don't think he had what was what on the speaker wires.

Appreciate it!

I'll just do another write up with pics on here.
This is the amp I used and the two wiring harnesses. Alpine makes two of these amps, one is a 445-a and the one that I used, a 445-u. The difference is the 445-a just has wires out of both ends and the 445-u has RCA jacks out of one side meant to plug straight into aftermarket head units and the 445-u has built in crossovers. That's why I went with the 445-u. By using the two wiring harnesses you can simply unplug the factory wiring harness from the back of the head unit and plug in the amp to the back of the head unit on one side and into the factory wiring harness on the other.

The first thing I had to do is cut the RCA ends off of the amps harness. There are 4 RCA connectors, one for each speaker. My truck also has factory theaters. I'm guessing these are just tied in with the front door speakers.

You'll take the aftermarket harness that will plug into the back of the head unit and splice the matching speaker outputs into the RCA wires. Everything is color coded. Don't worry about the other wires right now.

What are the part#'s for the aftermarket harness...

This may be the way to go.

You'll do the same thing to the other side. The yellow wire with the fuse block on it is coming out of the amp. This is the power from your battery. You'll get this power from the head unit itself. I got a little ahead of myself in this pic but what I have to do is tie the yellow from the harness on the head unit side of the amp with the yellow on speaker side harness, and the fused yellow wire out of the amp all together to share that same power.