Hirschmann needs major fixing, so got a cheap aftermarket to hold me for a while. Not figuring this wiring at all. Youtube and other diagrams all show different color wiring for our '82 240.
Saving the old car plug.
I only know the black is power and long brown is neg on the car wires. URO did not come with instructions.
On antenna, black is ground, green is power. Red is mystery. Showing power with ohm meter, but nothing happening in a few configurations
Also, my electric antenna switch in the car does nothing, never has since purchase. That could be the problem as well.
Any thoughts? Electrical is not my strong point, though got a VDO Continental upand running for Bluetooth nicely. I did hook the Continental antenna wire to the original car wire, but not sure if the switch disables or overrides it.

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