I have a sligtly odd problem after installing a set of new speakers..

every now and again, when going over bumps, the interior lights come on, flashing...

i can get them to flash by thumping the door card near the speaker.

by process of elimination, the wire for the door courtosy (sp?) light has to be being shorted to somthing. when the lights are ON, if you press up or down on the window, the light goes off...

has anyone got a wiring diagram / colour (sorry - color for you guys ) chart for the inside of a W140 door? it would help a lot, and save a lot of time.

email it if you can? guy@dewdney .co .uk

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C140 420 CL
W114 280CE pimpmobile
W114 250/8 Hillclimber with M110 and bike carbs - got any hot cams?

That sounds like it could be a problem with the door switch (or switches).
Test those first.

Next I would be concerned that the switch wires were somehow damaged during the speaker install.

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1986 300E 5-Speed 240k mi.

Nope, as i disconnected the switch itself and it made no difference...

definately a short int he wiring itself..

guyh

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C140 420 CL
W114 280CE pimpmobile
W114 250/8 Hillclimber with M110 and bike carbs - got any hot cams?