Help no head lights!!!!!!

i have an 01 Z24 and i have no head lights when i turn on my head lights im hearing my power doors lock(or unlock) i have the fuze boz out and trying to trace the short bu i know im going to have to run a jumper wire any one have an i dear on where to start?????:screwy::runaround:

I have replaced the dimmer switch on a lot of Cavaliers. Don't know about the doors unlocking tho.