I rewired my 49 by following the existing lines and the schematic in the shop manual for the wire sizes. It is very easy to do yourself. Plan it out. I did one wire at a time but also thought about the next one for routing and so on.
The most important thing is to have a good crimping tool. Once you have it crimped do a pull test but don't go crazy. I also put heat shrink over the ends.
Now here is the part that will make some people wonder. From the firewall forward I used only black wire. Why? Because there are only a few wires and the longest run is less than 4 feet. If I could not trace it then there is something wrong with me!
If you want you can buy a fabric loom from PICO that looks authentic and run your wires through it. However I would suggest you run the wires before you put on the terminals.
