I'll have to check that. Hate to start cutting and splicing a new wire harness. I'd like to find out why the side markers go out with head lights on. I'm still wondering if the difference is in the headlamp switch. Bumper lights is a 2 wire plug. There are 2 one wire ends one for the side marker and the other is for fender mounted turn signals. It must be in the switch or some sort of ground issuse.