i HAVE 88 CHEVY SLIVERADO. i DO NOT HAVE ANY RUNNING LIGHTS, BRAKE LIGHTS, OR TURN SIGNALS ON REAR OF TRUCK. tHE FRONT TURN SIGNALS DO NOT WORK, BUT PARKING LAMPS COME ON, ALONG WITH HEADLIGHTS. i'VE CHECKED FUSES, THEY ARE OK. cOULD THIS BE A MULTI-FUNCTION SWITCH OR MAYBE A BAD GROUND?