While t-taps work fine and are currently the industry "standard" (meaning most shops use them for alarm/remote start/stereo installs), they WILL fall off eventually. Usually within 3 years and alot of times inside the first year.

Personally, I use t-taps at the shop only because it is dictated by the owner in order to get installs done more quickly. When I do my own cars or side work for people, I solder when possible and tape & splice all other connections.

Thats interesting. I have never heard that before. I have had a full alarm and stereo installed in my 2000 Durango since 1999 when I purchased it and have never had one of these fall off or loose contact. They actually lock in place real tight. Maybe if installed on a moving part or a high heat area but most wiring jobs do not involve these conditions.

Back to the main question at hand I do agree that solder along with heat shrink tubing are a much better choice for your friends project.

Thanks a lot guys! You've all really helped! He's at radioshack right now getting wires and stuff. I'll let you know how the project turns out.
Thanks again.
-Brian

solder then shrink tape it.