I had some problems with my ignition switch,when I replaced lock and switch all the wire came out of the plug.I then had to search for info on wiring it back again.One of my problems was accesory did not do anything.
There are 2 red wires on the plug in,they can be in wrong posistion.
Don't atempt to repair without right info.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt