Hi, I have searched and figured out how to hook up the 451M lock relay, but didn't see anything about using it to do a second stage unlock. I have a code alarm ca645 alarm and I bought aftermarket power lock actuators. They are Harada DLA-01. On the locks, the instructions say Green has +12v when lock is pressed, and Blue has +12V when unlock is pressed. I do not plan to install lock/unlock buttons, I don't want to cut any holes in the doors. I am just going to activate them with the alarm remote.
The color codes for the alarm system are as follows:
Blue/Green -- (-) 2nd stage unlock
Blue -- Negative unlock / Positive lock
Green -- Negative Lock / Positive unlock
My guess would be to take the positive lock wire (green) from both locks and connect them together at the relay and then connect the positive unlock of driver door to the relay, and then connect the 2nd stage wire to the blue of the passenger door. I'm not sure on this, so I wanted to get the input from you guys. Thanks alot - Robby
on 451m have 5 big wire & 3 small wire
on 5 big wire
violet go to 12volt (+)
white and brown go to ground (-)
green (lock) go to door lock motor green
blue(unlock ) go to door lock motor blue
and 3 pin small wire to alarm if on your alarm don't have 3 pin and the red wire on 3 pin need to hook to 12 volt (+) and green for lock and blue for unlock
i hope this work for you