Central Locking System, 5 Wire Actuators, 451M Relay Wiring
Printed From: the12volt.comForum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=148230
Printed Date: May 03, 2025 at 1:00 PM
Topic: Central Locking System, 5 Wire Actuators, 451M Relay Wiring
Posted By: hadyshaltout
Subject: Central Locking System, 5 Wire Actuators, 451M Relay Wiring
Date Posted: December 14, 2024 at 11:51 AM
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.
The MB W123 car's central locking mechanism rod has a very strong spring responsible for preventing the door lock rod from moving down after unlocking. See this video W123 Rod Spring.
Now, I’ve decided to get the locking mechanism rods for my front doors. However, I need to know if I should use a 451M relay for this installation .
Since the rod spring is very strong, as shown in the video, I’m considering getting two actuators for each door (two 5-wire actuators for the main door) and installing the 451M relay to protect the central locking system. Does this sound like a good plan?
Now, I don't know how to wire it correctly, Since the main door has 5 wires actuator, I made a diagram in photoshop and need your help how to wiring.
The W123 original actuator and central lock rod (I don't have the original actuators)
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- 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.
The MB W123 car's central locking mechanism rod has a very strong spring responsible for preventing the door lock rod from moving down after unlocking. See this video W123 Rod Spring.
Now, I’ve decided to get the locking mechanism rods for my front doors. However, I need to know if I should use a 451M relay for this installation .
Since the rod spring is very strong, as shown in the video, I’m considering getting two actuators for each door (two 5-wire actuators for the main door) and installing the 451M relay to protect the central locking system. Does this sound like a good plan?
Now, I don't know how to wire it correctly, Since the main door has 5 wires actuator, I made a diagram in photoshop and need your help how to wiring.
The W123 original actuator and central lock rod (I don't have the original actuators)
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Infinite Code