door locks 97 suburban

I have gotten all of my alarm and remote start hooked up thanks to all the resources on this site, with the exception of the door locks.  The diagram listed on this site states to use the factory relays above the accelerator.  I found what looked to be that relay, with all the matching wires, but when hooked up it did not work, but it did make my speaker buzz, which leads me to believe it's a stereo wire not a lock wire. 

Am I looking in the wrong place?  Is there a better, more definable location of the lock wires, like hopefully on that harness at the kickpanel?  I've searched through the forums but found nothing that answers this specific question.

Thanks,

Rob...

I've seen a few that weren't positive, like the trucks. If the 'burb has factory keyless, then the wires are in the relay pack above the gas pedal, white and blue, both on the opposite ends of the plug and are postive pulse. On some if it dosn't have keyless, then the wires are the same colors and they are 5-wire in the kickpanel.  I'm sure there's a link for a diagram on reverse-type door locks on this site somewhere, if your not sure how to do them. If your still not sure if they're 5-wire(reverse polarity) locks or not, either look at the back of the lock switch on the door(they just pop out), and if there is five wires for the locks, then its 5-wire type. Or cut one of the lock wires in the kick, if the doors won't look or unlock at all with one wire cut, then they are 5-wire. If they still work one way, then it's postive. But on a 4 door cheby, they should be positive. Hope this helps you.

Just my two pennies