Home made immobilizer and/or electric fuel pump relay, remote operated

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Tony Z
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Home made immobilizer and/or electric fuel pump relay, remote operated

Post by Tony Z »

This is something I wrote up a few years ago, but as it was buried in a thread, I decided to make a new post for all to see.

Tony Z wrote: Thu Aug 16, 2012 7:16 pm I have finally gotten around to doing this for you guys.... I hope it all makes sense.
I know I said I'll offer it in a kit form, but for now, it isnt worth the effort for me as I dont have the time to source the parts and get to a post office.... so this is a step by step how-to guide thingy for a simple system that will work.
Please remember, this isnt tamper proof and it is up to you to hide it nicely. All wiring is to be done properly.
This is not a certified immobilizer.
I will not be held responsible for any mistakes in this thread nor any mistakes made by you. In other words, do this if you wish and if anything goes wrong, you take the blame, not me.




Alright.... parts that you need.
Image

Wiring diagram
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The wire going to the starter: (red in my picture)
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Verbal description:
The remote and the receiver are from ET systems who do motorised gates and doors... any security shop should be able to supply.
The relay can be found at any auto spares shop.
Find a connection in the fuse box that only has power once the ignition is turned on. Run a wire from this point to the power (+) point in the receiver. Then from 0 to ground (this provides power to the receiver).
From the same fuse box point, run a wire to the relay coil (86), then from 85 to the N/O contact on the receiver, then from common (com) to ground. This N/O point is the switch, which when closed/activated (by the remote) allows power to pass through the relay thus closing the switch 30-87 and allowing power to pass through the relay.
The wire running from the ignition key switch to the starter can be disconnected at the starter and connected to the relay #87. Then a new wire is run from #30 to the same point on the starter. (Or you can cut the wire and place each end of the cut onto terminals 30 and 87).
Then read the instructions on how to program the remote to operate the receiver. Switch the ignition on and program the remote. If you keep reading the instructions, you will see you can also program in a timer, so the receiver resets after a time of your choice (I would choose 30 seconds).
If you have done all this properly and the car has not burned down, you can operate the system as follows:

climb into car
put key into key hole
turn key - ignition on (this provides power to the receiver but the starter motor is still out of action even if you engage the key to the start position)
press button on remote (relay engages and thus starter can operate)
you now have 30 seconds to turn the key to the start position and start the car - if it takes longer than 30 seconds, the relay will reset and you have to press the remote again.
drive as per normal.


instead of wiring the points 30 and 87 to the starter signal wire, you can run them in the same way to an electric fuel pump or the coil power supply (or any other item you want to control via remote. If you need the item on permanently then do not set up the timer.

I hope this helps. Please let me know if I have made any mistakes so I can amend them. :puterwork:

Tony Z


Tony Z wrote: Wed Oct 02, 2013 6:20 pm I installed my kit into a kombi, running the electric fuel pump and the distributor from the immobilizer.
Immobilizer gets powered by the ignition switch, so you hear an audible beep when you turn on the key.
At this point, there is no power to the fuel pump or the dizzy. You can still turn the starter, but the engine wont start.
Press the button on the remote and power is available, you can now start the engine.

Also, pressing the button again, cuts all power to the pump and dizzy, thus turning off the engine.
http://www.youtube.com/watch?v=b2tVCtuz ... e=youtu.be


This is what it looks like:
Image
Image


If anyone wants one pre-assembled, I'll make them up and program the remote for R700, remote included.


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