I've been looking at the wiring diagrams for connecting an aftermarket remote starter to my 2004 300m. It looks like these cars need some special wiring for the locks/alarm/etc. to work properly.


Stuff like a 2.7K ohm resistor with positive pulse for locking and a 620 ohm resistor with positive pulse for unlocking. This would need to be done with relays.


I've seen references to modules that take care of all this without needing to add resistors and relays, etc. but I can't find anything specific.


Another item is bypassing the transponder system. I guess taping a key inside the steering column is an option here, but are there modules for this?


Can someone suggest a remote starter that would work specifically with my 300m?


Thanks!!!