I'm trying to figure out what that little plastic piece is that mounts on the back of the key cylinder is. Is that for the door locks or is it for the factory alarm? I'll be installing an aftermarket alarm and want to know if I can just remove them and still be able to control the passanger door lock by installing an acuator on the drivers side.

The drivers side has two tiny white wires and regular size (18 guage) black and a blue wire. So a total of four wires. The passanger side just has the two main wires. What are these plastic things for? It looks like it detects when the door lock is locked and unlocked, but is it for the factory alarm or for the door locks?

 

I think it's for the factory alarm only, it detects the lock position. So, if they use a jimmy to pull on the rod that is connected to the lock or move the inside lock button, it's an unauthorized entry and the alarm goes off.

Real easy to test - pop it off the back of the key cylinder and try it.

I believe the sensor for the power locks is in the door latch itself in the door.

Dale

 

Op,

From what I remember, the piece on the back of the key cylinder was for the door lock; however, I am NOT an electronics guru. I also remember that the Factory Service Manual (FSM) had a decent layout of the door components. If you don't have a FSM, it can be downloaded free (sticky #6 in this section).

I imagine that you would have more success with this thread in the "interior / exterior / audio" forum. I did a quick search, and pulled these threads...

https://www.rx7club.com/search.php?searchid=8349345

good luck,

Charlie

 

Dale,
I would test it on my car, like you suggested, but I have my car completely apart right now. I'm redoing everything and would like to wire up the aftermarket alarm now while everything is out. Therefore, there is no way for me to test it in the current state.

caredeen,
I checked out the the links, but I couldnt find anything regarding that key cylinder thing. I think it only makes sense that it's for the alarm only, because doesnt the passanager door follow the drivers door even if you open/close from the inside? Meaning that you dont have to use the key to control the passanger door? That means there has to be something on the actual door latch, right?

 

The passenger door latch has an actuator built in to the unit. The driver's side does not have the actuator. When you unlock the door on the driver's side, the sensor on the back of the lock cylinder sends the signal to the door lock relay behind the driver's kick panel. This relay then sends a signal to the passenger door actuator to unlock it.

If you want keyless entry, you need to add an actuator to the driver's door lock cable. You need to make sure you have the actuator installed properly so that the lock cable doesn't snap. Do a search and you will find a few pictures. I have one somewhere on my computer I can upload if you need it.

 

Thanks, that's good info. On my driver's side, the lock cylinder plastic piece has the two skinny white wires ripped out, so I was trying to avoid replacing it... Is there a way that I can just bypass it and have the aftermarket alarm send the open and close signal directly to the relay? Meaning that the lock cylinder gets bypassed.

By the way, I'm having my buddy who is an installer install this alarm for me, so I just need to get the factory alarm/passanger auto lock part figured out and he knows the rest.

 

This cant be true, because the passanager door still recieves a signal from the driver's door when locking and unlocking while sitting inside the car and not using the key. The key cylinder only detects the key being used and that it. Therefore, that sensor on the key cylinder has to be for the factory alarm only.

 

WHAT exactly 'can't be true'? When the driver side door is unlocked, it sends a signal to the actuator in the passenger door. If you are in the car and have the doors locked and unlock the driver's door, it unlocks the passenger door too.

I've had both doors apart and can vouch for how it works.

End of story.

 

No ****, buddy. That is just what I said in my post, if you actually read it. The key DOES NOT need to be used to control the passanger door lock. The key cylinder attachment DOES NOT perform that function (and is for the alarm only), because the passanger lock is still controlled from inside the car WITHOUT using the key. Enlish 101, k, thanks, bye.

Anyways, what reason did you even post? I don't see anything useful in your post. You only stated the most obvious thing. " If you are in the car and have the doors locked and unlock the driver's door, it unlocks the passenger door too" - Yea no ****, the question was WHAT sends the signal.

 

No ****? Then WHY did you even post in the first place, douche?
Get over yourself if you ever want to get help on this forum. If you are too ******' dense to understand basic mechanics, I suggest you go drive a Prius....lol!

 

The reason I posted what to get an answer of WHAT triggers the signal to the passenger door to lock/unlock. I posted my findings that it can't be the attachment on the key cylinder, because that would only send the trigger when using the key, and since it also works without the use of a key, the sensor has to be somewhere else. Then, of course, I get some 16 year old "know it all" come in and whine with some useless information that is equivalent to "your FD runs on gasoline."

Anyways, kid, I don't have to defense my electrical/mechanical engineering degree to you. Work on your high school diploma first then we'll talk. Unless you know exactly which sensor sends the trigger signal to control the passanger door lock, then I suggest you just go back to watching cartoons.