w123 keyless install.. do i need a specific actuator?
 

My driver's side lock is a bit tight when I attempt to unlock it. I'm about to do the keyless ebay install. I'm going to buy the actuator separately. Should I get a specific one? Are there others that are more powerful than others??

You only need a 2-wires actuator, simple one will do and they are normally pull/push quite strong. The W123 has a vacuum switch at the driver door to lock/unlock. It takes minimum force to move it. It is easy to install but you need to drill 2-3 holes to mount and align the actuator well to pull/push the switch.

If it is tight when locking/unlocking manually then it is the linkage problem. You need to fix that first.

Good luck.

ah-kay.. thanks for the info.