Seat Leon rear turn signal problem in wiring harness

[Jackmed123]

rear turn signal problem in wiring harness on seat Leon that's what a snap on reader said I am guessing it's it's maybe a plug somewhere I put a live wire from the side turn light to the rear and works so it's a live but the light on dash still on as it still spot the problem could someone tell me where any of the plugs are before I start ripping the whole car apart thank you