ok so after looking at the wiring diargams I disconnected 1 by 1 all the power consumers on fuse 12.

antitheft control module
central locking supply pump+ground
antitheft door switches
power seats
power seat motors
trunk lamp+coutsey lamp
checked configuration of radio
diode at x42

I had someone crawl in the trunk and i closed it and the light went out as soon I closed it. The aftermarket radio is hooked up right. I cleaned up corrison on some connectors. Still didnt drop the 200ma draw on the battery with the key off.

I was going to check the ground connections next. Any other ideas?

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1986 300SDL, 211K,Dealership serviced its whole life
1991 190E 2.6(120k)
1983 300D(300k)
1977 300D(211k)