Hey guys, I'm installing door lock actuators with 2 relays (one to lock and one to unlock) and I'm having some issues. With the way that I have the system wired up, my relays are clicking like they should be (one clicks when I lock the alarm and the other clicks when I unlock the alarm) but the actuator is not doing anything. Here is how I have the two relays wired up:



Also, I noticed that the wire that I have hooked up as my 12V is actually more around 10.4V. I'm not sure if that could be causing any problems. Any help is appreciated.


Modified by iLL_Rex at 7:48 PM 8/19/2008

 

If they are wired the way you show it would be correct and should work, [even at 9V, it is what I use to test my actuators].

I would check, [with meter or test light] #30 of both relays, first to make sure they both test as grounds when relays are "at rest" then for 12V+ output when relay is energized, [triggered].

Where are you getting the 12V+ for the relays?
Where are you getting the ground for the relays from?94

 

For both of the relays, #30 and #87a are grounded at rest. Also, #85, #87, and #86 are all at about 11.8V (I changed where I was getting my ground and 12V from).

When I press lock on the alarm, both of the 30's on the relays pop up to just over 11V (this also happens when I unlock the alarm. This seems kind of weird because you would think in order for the actuator to work, one of them would need to be grounded). Also, when I press lock on the alarm, the 86 from the lock relay goes to ground.

When I press unlock, pretty much the same of everything happens with lock, but the the 86 from the unlock relay goes to ground.

I have my ground wire for both of the relays wired to the chassis and the 12V source is coming from the alarm (I have a three wire harness that hooks into the alarm. Two of the wires are for lock and unlock pulses and the third is for 12V).

I'm thinking that the issue is the fact that the output is 12V for both of the relays regardless of whether it is being locked or unlocked. I'm not sure what would cause this, though.

 

You need to change the power, you can use the power on the 3pin lock harness for the relays, [#85] the output is only 500mA so it will not work for the door lock actuators, [#87] that must come from a 12V+ constant source, [at least 10A] like the ign. switch 12V+ or you can use the 12V+ constant free pin on the under dash fuse box. 94

 

Okay, cool. I'll try that tomorrow. Thanks for the help.