OK, ive been trying to figure out how to install my Commando keyless entry system for some time now and I think I somewhat understand how to do it, but need help with the Relays. First of all do I need relays? If so, how many, and where to get them?

 

It should tell you when you need to use them or not, depending on whether the car is negatively or positively triggers and what sort of pulse the unit sends out, etc. Radio shack sells them for like $5 I believe.