'86 420SEL Becker Grand Prix Replacement
 

Hi, my radio has failed after the rebuild, so I am replacing it with a simple Kenwood from Crutchfield. It came with a nice adaptor harness and some instructions.
Only question I have: there are two female spade terminals on the OEM radio harness: one has a brown wire striped blue, the other has a solid blue wire.
Is the solid blue wire the one that activates the power antenna? I assume the brown wire is for the factory alarm.
Otherwise it looks like it is going to hook up nicely and without cutting the factory harness.

UPDATE: Got the radio working; still working on the power antenna and controlling it.