I'm having issues with this wiring set up. I've got everything hooked up as the diagram shows but I can't get the locker to lock with the switch. It only works to unlock the locker after I lock it with a heater relay. But no matter if the switch is in the on or off position or unplugged from harness, as soon as I hook up battery, the locker unlocks itself... Stock 97 4runner rr diff lock switch using the internal bulb as "locked" indicator lamp. Any ideas would be appreciated. Thanks

 

Got a dc relay and it now works perfect... Light inside the switch illuminated when engaged