1984 300SD CA model. In the trunk I have a spare three wire plug. green/yellow, red, purple. There has never been an after market trunk CD and this plug appears factory. Looked on the wiring diagrams and couldn't find anything to correspond. Before I get the multi-meter out and try to trace this, does anyone know what it is for? Thanks

Bruce

__________________
The Golden Rule

1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later)