02 Chevy Avalanche

I don't under stand my alarm and door locks wiring. Do i ned to use diodes on both lock and unlock. also do i need them for my alarm wirers. Could you seed me a wiring diagmfor Keyless entry.

The Chevy uses a (+) type B door lock system found at the BCM which is located behind the drivers side of the dash. The plugs on the BCM face towards the rear of the vehicle. If your alarm system has alternating polarity door wires, the attach the ones that pulse (+) to the target wires and your set. If your alarm does not have this option and is only a (-) trigger door lock system you will need to reverse the polarity of the wires to a (+) by using the NEGATIVE INPUT ---------------> POSITIVE OUTPUT diagram below:

http://www.velocitymotorsport.com/install_notes/Converting_Outputs.jpg