Originally Posted by craigolsen
Talked to Reese today and said there's a junction box up front driver side. In deed there is!
Question: Anyone know what the yellow wire is for? It was not connected to anything !
The yellow wire is connected to the centre pin of the connector to the tow vehicle, which is the auxiliary circuit... meaning used for whatever you want. It isn't used in stock Escape wiring, and probably isn't connected in the tow vehicle. Most people don't use it for anything. The most popular uses among those who do are
- for backup lights, and
- for stop lamps (brake lights) separate from the turn signals.
: This wire is yellow in the Bargman standard for the RV-type 7-pin connector (the one with 6 blade-shaped pins around the outside); Escape follows this standard. Some websites show a different colour (usually purple) for this pin, because they are applying a different colour code which was not the original standard for this type of connector; they may also list it as specifically backup (or reverse) lights, but there is no standard making that assignment.