Only 4 volts to Impala brake lightsViewing 2 reply threadsAuthorPosts December 7, 2016 at 6:55 pm #14384 DanGuestAny one would know why instead of 12 volts I only have 4 volts to brake lights 2002 Chevy Impala. December 19, 2016 at 10:25 am #14394 Jimmy tGuestEither low voltage out of switch, or a corroded wire between switch and taillamp harness. April 16, 2017 at 4:21 pm #15573 ClaytonGuestHi I’m want someone to talk toAuthorPostsViewing 2 reply threadsYou must be logged in to reply to this topic.Log In Username: Password: Keep me signed in Log In