I just picked up a Surv Mod switch which goes where the fog light switch goes on my 03' monte it came off a Impala police car it kills all lights except dash for survalence mode I have the pigtail end that plugs into the switch but have no idea were it spices in I'm sure the Impala probly had special harness package for this does any one know how to splice this into m/c harness??? Thanks all!!!

 

From what i read on the my google search your efforts will come with little result, sounds to me you need the 9c1(cop) bcm to be able to do this,

Surv mode/drl-alc disable - Chevy Impala Forums

DRL/ALC Bypass Kit - Vendors Section - NAIOA