I AM WORKING ON A 93 CAPRICE WITH THE 9004 HEADLIGHT BULB,I WOULD LIKE TO HAVE IT SO I CAN USE EITHER BULB,CAN I SPLICE INTO THE CAPRICE HARNESS OR WHAT CAN I WIRE UP A SEPARATE HARNESS PLEASE HELP ME WITH THIS
If you want to use both at the same time I would just splice it into the existing wire. If you are trying to make them interchangeable put in some wire connectors on either bulb.
