Looking to add remote entry to my '93 300E with vaccum locks.
I got the double-relay wiring diagram from the manufacture, however, I also want to add a lock/unlock button in the center console. Does anybody has a circut diagram to do this?

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93 300E (for DAD)
06 ML500 (rides like a truck)
99 E320 (sold, wife didn't like the dings)
98 C280 (sold to family)