Remote Keyless/Alarm tips, '84 300D

[TomJ]

While waiting for part on the tranny swap job, I decided to install a cheapo alarm (Crimestopper 2001FS) in the 300D and try to get around the vacuum locks by using the remote keyless entry system on the alarm.

Using a cheapo ($4 - NEW) door lock solenoid from the same place I bought the alarm on ebay (mandsenterprise - HIGHLY recommend!), I installed into the drivers door, I now have keyless entry. Works flawlessly. Once the alarm actuates the drivers door, the vacuum opens the rest of them.

Here's a pic of the door install - solenoid mounting at bottom inside of door (you can see the black plastic motor sticking out a bit):



Here's the attachment to the actuator rod (had to bend the solenoid rod in a slight "S" pattern to get around a few things and clear the vac actuator - seen inpic):



Also, for the parking lights, use the smaller grey wire on the bottom of the light switch (as you look at it mounted from under the dash, it'll be right at the bottom of the switch, very accessible).

To also turn on the inside dome light, I had a helluva time finding the control wire to the front one, so I just used the bottom wire in the dash switch for the rear dome light (two brown and one grey, just tap into the grey).

So when the keyless entry is activated (or alarm is de-activated), the solenoid opens all the doors (opens drivers door, which in turn opens the rest with vac), the rear inside dome light comes on and the parking lights turn on. With this alarm they stay on for about 2mins after the unlock button is pressed.

Alarm was $39 (I think they're $44 now?) and the solenoid was $4. The radar perimeter detector (admittedly overkill for a $1,500 car) was a whopping $19.

The electrics in these is really funky, as most ahve found out when doing the same thing I did, but alarms are doable even in these older cars.

[240Demon]

Man, totally cool idea about the solenoid in the door!! That never occured to me as I to have wanted to put keyless entry in my 240D. I might have to copy your idea...:-)

I hope it works well

[speedy300Dturbo]

Yup, this is the ONLY way to install keyless central locking on a W123, unless you want to retrofit the whole system to use electric actuators.

[81Wagon]

I did this a few weeks ago in my 300TD.

If you want to turn on the front dome light, you should be able to use the wire in the driver's door sensor - the one in the door frame that turns on the dome light when the door is open. This is what I did, and it works wonderfully.

However, I couldn't figure out which wire to use for the parking lights, so I didn't bother with it... I'm going to go out right now to wire it to the little gray wire at the light switch though, thanks!

What's a radar perimeter detector? I'm guessing it's one of those things that beeps to tell you how close you're getting to things when backing up, am I right? Does it do the same in the forward direction? Where did you get it? For 19 bucks it could be a fun toy ;-).

[81Wagon]

Okay, so I've tapped into the gray wire at the bottom of the light switch... only the right parking lights flash, though, which I thought might happen. It looks like the gray/white wire next to it is for the left parking lights, so I will wire in a relay to get them both flashing.

Do you have any idea which wire goes to the horn?

[TomJ]

Originally posted by 81Wagon
Okay, so I've tapped into the gray wire at the bottom of the light switch... only the right parking lights flash, though, which I thought might happen. It looks like the gray/white wire next to it is for the left parking lights, so I will wire in a relay to get them both flashing.

Do you have any idea which wire goes to the horn?

Hate to think I gave bad advice, so here's a pic of the wire that I tapped that turns on all four corner lights.



LMK if this works for you.

As far as tapping the jamb switch for from lights, I already did that for the doem alarm wire, but I suppose I could tap ANOTHER wire to it to turn on the dome lights on de-activation?

No idea on the horn, don't want it to honk the horn anyway.

BTW, anyone retro'd Fiam's into these?

[speedy300Dturbo]

Here's what you need to do, to get both parking lights to flash. You'll need two relays, standard 5 pole.

Relay # 1:

* 87 & 85 : Light Output from alarm/RS unit
* 86 : Ground
* 30 : To left side of parking lights (terminal 58L)
* 87a: NOT USED

Relay # 2 :

* 87 & 85 : Light Output from alarm/RS unit
* 86 : Ground
* 30 : To right side of parking lights (terminal 58R)
* 87a: NOT USED