Well, I've exhausted every source of the problem that I can think of, other than the control unit acting up intermittently, and nothing has corrected the problem. Going to pull the rear seat and get the numbers off the unit. Other than that,and an obvious visual check of connections, etc.(which I am sure at this point won't show me a thing) what else can I test on the control unit to diagnose it ?

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Andy_M
'98 W140 S320 Black/Black
'06 W164 ML500 AMG White/Grey
'03 Porsche 986 Midnight Blue/Grey