cruise control amp connector "colors"
 

does the color of the connector on a gen1 w126 cruise amp mean anything? I am searching the wreckers for compatible amps. Mine is orange, others in the yard are not. They are however gen1 w126's with om617.

I pulled one and it intermittently works but want to know if it is the right one before I try to repair it. Why not repair mine? does not even try to function. Rather start with one that has at some point worked.

Obviously checking the PN would be the answer but I don't remove the housing, just the board.

http://i.imgur.com/kz7Rkl.jpg

Typically the colors are representative of the amplifier's model:

The OM617 300SD's used:
002 545 16 16 (Orange, short compared to other two boards)
002 545 82 32 (Green, long compared to Orange board)
003 545 86 32 (White, Same length as green board) (Also used in 300SDL)

Other colors:
002 545 32 32 (Blue, used in 123 diesels)
002 545 91 32 (Orange/Yellowish, used in 123 diesels)
003 545 09 32 (Orange/Yellowish, used in 124/201 gassers)

can the green and orange be interchanged?

002 545 16 16 (Orange, short compared to other two boards)
002 545 82 32 (Green, long compared to Orange board)
003 545 86 32 (White, Same length as green board) (Also used in 300SDL)

These can all be interchanged. The others I listed are not compatible with a 300SD.

Instead of trying to remove just the cruise amp, you can remove that whole bracket. Its held in by a single 10mm bolt/nut at the back of the brake pedal assembly.