First - obviously - check the instructions. It's my understanding that with LED's, polarity does matter. On mine, the BLACK is taillights, red is brake lights and white is ground. Go figure.

If yours is only 2 wire, I'm guessing it's internally grounded/grounded by the housing. I'd do a quick bench test to be sure.


'69 1/2T stepside, Sea Foam Green, 250 L6 w/ 3 on the tree, not an option on it, in the family since new.