I'm sure this is simple, but I'm confused. So with headlight switch on I get nothing low beam or high beam. My thinking is that with switch on, I should read 12v across red & black or violet & black depending on which is selected. I get nothing voltage wise. If I pull the multi function switch back like i'm dimming or putting lights on bright, they light up as long as i'm holding it back. I jumpered 12v from battery + and ground to pins on left headlight both red and violet connectors and they both lit up. I've replaced headlight switch and I'm thinking the only thing left could be the dimmer switch. Any thoughts?