Left rear turn signal lamp will not work.
Known good lamp, no power going to socket, rapid flashing of turn signal on dash as if lamp is out, no visual damage to wiring that I can find. where do I look now??
Do you have a trailer plug? if so disconnect from the factory harness and see if that helps.
Rapid flashing indicates a loss of load, so there must be a broken circuit somewhere, it could be a pushed out connector or a broken wire that is still covered by insulation, I would suggest starting at the turn signal switch and head back.
thanks to both of you for your response. I Unplugged the trailer harness and it did not help as such, but while fooling with iut, the turn signal started working intermittently, so I started from the light and worked back to the front and found the main front to rear harness connector had a broken retainer clip and was backed out just enough to make the left light not work!! tied and taped the connector tightly together and it works again!! woo hoo!! so thanks again for the suggestions, gave me the starting point I needed to solve the issue.
Looking for a Used F-150 in your area?
CarGurus has 206,316 nationwide F-150 listings starting at $1,499.
Search Ford F-150 Questions
Ford F-150 Experts
Related Models For Sale
Used Cars For Sale