2003 Ford Explorer sport has a faulty tail light?
Jesus, ford sierra's and escorts in the early 90's had this problem, and ford still make cars now with this basic quality problem! No wonder the american car industry is stuffed and bankrupt they still make crap cars (i owned the above two cars myself - never again)
Fix Or Repair Daily lol, no wonder the usa is full of toyota's and honda's lol
2003 Ford Explorer sport has a faulty tail light?
if the tail light works(the dim side of the bulb) the ground is not bad it's a problem in the feed wire to the brake side of the bulb.
Ford uses a bayonet base bulb and if you replaced the socket you may have wired it incorrectly - Using a test light perform the following tests; Observe the socket and you will see four contacts - one on each side of each end of the socket, with the test light connected to a good solid ground and the headlights ON you test all 4 contacts - one contact and only one contact should light the test light - if it lights on both contacts at one end it is incorrectly wired. Next have an assistant press the brake pedal and hold it applied while testing all 4 contacts again. this time the light should operate when touched to both contacts at the same end of the socket which lighted the test light on the headlights only test and not light on either contact at the opposite end- if the light operates on 3 contacts on this test it is incorrectly wired, if it fails to light on the second terminal check the wiring back to the common point in the harness where the right and left brake light wires are spliced. If it passes both of the above tests - then test with the test light between the connectors at opposite ends - it should light between both terminals on the same side on each side of the socket - if it does not light on either side then trace and repair the ground.
