central locking

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    Should I Install a 451M Relay for My Aftermarket Central Locking System?

    Good Day! - Info: I have a 1977 Mercedes-Benz W123, and I've installed an aftermarket central locking system. - Issue: The main front door lock while I'm trying to open it. After doing some research, I finally found a video titled (1972 to 1985 Mercedes Sedan Door Lock Troubleshooting: Little...
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    Disconnect Central Locking While the Key in Ignition Switch

    Good Day! I need help to install something like a switch to disconnect the central locking device while the car key in the ignition switch, My issue is when my arm touch the door lock bar, all doors locked, so to re-open them back I should open my door and re-close it which I can't do while...
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    Protect Central Locking System from Back E.M.F

    Good Day! First of all I'm a junior so take it easy with me, I'm doing my best as well as I can :) I bought a new local Central Locking system for my car to replace the old one, The new one has only 4 actuators for doors and I already have one actuator for the trunk which has two terminals...
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