DEI 700T Alarm Installation Instructions
Aug 24, 2003, 09:08 AM
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DEI 700T Alarm Installation Instructions
Given that the US Evo already has a robust theft prevention system via an immobilizer, my requirements for an add-on alarm system were somewhat basic.
1) Utilize the factory keyless entry system
2) Trigger the alarm based upon a door opening or a shock sensor
3) Provide a “don't mess with me” sound for minor shock sensor inputs
4) Utilize the car's horn as the signal
5) Hook up with a limited number of wires
The Evo has an immobilizer which prevents theft of the vehicle by preventing the car from running. This is accomplished via a small chip contained within the key, known as a RFID (radio frequency identification). When queried by the car, the RFID transforms the query in a unique way and returns the result. The car performs the same transformation and compares the two results. If they match the car is allowed to run. Bypassing the immobilizer is difficult as one has to replicate a serial bus message sent between to of the car’s ECU’s. (Note that this process is a little more complicated than this and is documented in the shop manual.)
Thus from a vehicle drive away theft prospective the system is more or less bullet proof. What the immobilizer doesn't prevent or discourage is theft of items within the vehicle. Hence the need for an add-on alarm system.
There are a number of after market alarms which are designed to augment existing vehicle systems. The DEI 700T is one such alarm. Its cost from www.autotoys.com is $85 plus shipping. While all of the requirements cited above are met, the alarm also has additional features which can be utilized with additional installation labor (e.g. siren, trunk unlock signal, starter interrupt, etc).
The alarm unit itself is about 3 x 4 x 1 inches. Connections to the unit involve valet and LED two wire harnesses, in addition to two main harnesses. To meet the requirements cited above only seven wires must be tapped into the Evo's harness. The most logical location to tap in is near the driver's side fuse block (known as the junction block in the shop manual).
The unit mounts to a bare metal region in the driver's side foot well area using double sided foam tape. Note that the manufacture states that screwing down the unit limits the usability of the shock sensor.
I created a pdf file with installation notes (no pictures) and posted it at timzcat’s ftp site. This installation is not rocket science and can be accomplished by anyone who takes their time. Alternatively one can give the notes to an installer to facilitate outsourcing the installation job.
If you do the job yourself a brief outline is included below.
1) Remove the driver’s side under dash panel and set aside.
First remove the hood unlock pull by removing two screws.
Remove the driver’s storage compartment (covers the junction block).
Unplug the harness from the headlight level and dimmer controls by reaching through the hole just uncovered by removing the storage compartment.
Unplug the harness from the junction block (it’s obvious which one).
There are two screws and one bolt on the bottom of the under dash panel. Along the top are three clips. You can reach behind the panel from the bottom to ease out the clips, thus preventing possible damage to the dash or panel.
2) Cut down the DEI harness to the necessary length (two feet or so is more than enough). Test the layout before committing yourself.
3) Disconnect the negative side of the battery.
4) Using 3m wire taps (permits a spade lug on alarm system wire to plug into the car harness) make the tapes as documented in the notes. (Walmart sells these taps.)
5) Plug in the alarm system per the notes and reconnect the battery.
6) Test the system.
7) If everything is working disconnect the battery and alarm system.
8) Dress the alarm harness with electrical tape to prevent noise from vibration.
9) Install the harness via wire ties to existing wiring.
10) Install the alarm module just above the kick panel via double side foam tape.
11) Plug in the alarm harness to the car.
12) Reconnect the battery.
13) Calibrate the alarm’s shock sensor to the car and installation location.
The alarm should only trigger for a hard slap on the windshield. If the shock sensor is set too sensitive false alarms will be generated by random noises such as engine / exhaust system cooling.
Bumping the windshield with the heel of your hand should only generate a series of chirps from the horn.
14) Reinstall the driver’s side under dash panel.
Your done!
1) Utilize the factory keyless entry system
2) Trigger the alarm based upon a door opening or a shock sensor
3) Provide a “don't mess with me” sound for minor shock sensor inputs
4) Utilize the car's horn as the signal
5) Hook up with a limited number of wires
The Evo has an immobilizer which prevents theft of the vehicle by preventing the car from running. This is accomplished via a small chip contained within the key, known as a RFID (radio frequency identification). When queried by the car, the RFID transforms the query in a unique way and returns the result. The car performs the same transformation and compares the two results. If they match the car is allowed to run. Bypassing the immobilizer is difficult as one has to replicate a serial bus message sent between to of the car’s ECU’s. (Note that this process is a little more complicated than this and is documented in the shop manual.)
Thus from a vehicle drive away theft prospective the system is more or less bullet proof. What the immobilizer doesn't prevent or discourage is theft of items within the vehicle. Hence the need for an add-on alarm system.
There are a number of after market alarms which are designed to augment existing vehicle systems. The DEI 700T is one such alarm. Its cost from www.autotoys.com is $85 plus shipping. While all of the requirements cited above are met, the alarm also has additional features which can be utilized with additional installation labor (e.g. siren, trunk unlock signal, starter interrupt, etc).
The alarm unit itself is about 3 x 4 x 1 inches. Connections to the unit involve valet and LED two wire harnesses, in addition to two main harnesses. To meet the requirements cited above only seven wires must be tapped into the Evo's harness. The most logical location to tap in is near the driver's side fuse block (known as the junction block in the shop manual).
The unit mounts to a bare metal region in the driver's side foot well area using double sided foam tape. Note that the manufacture states that screwing down the unit limits the usability of the shock sensor.
I created a pdf file with installation notes (no pictures) and posted it at timzcat’s ftp site. This installation is not rocket science and can be accomplished by anyone who takes their time. Alternatively one can give the notes to an installer to facilitate outsourcing the installation job.
If you do the job yourself a brief outline is included below.
1) Remove the driver’s side under dash panel and set aside.
First remove the hood unlock pull by removing two screws.
Remove the driver’s storage compartment (covers the junction block).
Unplug the harness from the headlight level and dimmer controls by reaching through the hole just uncovered by removing the storage compartment.
Unplug the harness from the junction block (it’s obvious which one).
There are two screws and one bolt on the bottom of the under dash panel. Along the top are three clips. You can reach behind the panel from the bottom to ease out the clips, thus preventing possible damage to the dash or panel.
2) Cut down the DEI harness to the necessary length (two feet or so is more than enough). Test the layout before committing yourself.
3) Disconnect the negative side of the battery.
4) Using 3m wire taps (permits a spade lug on alarm system wire to plug into the car harness) make the tapes as documented in the notes. (Walmart sells these taps.)
5) Plug in the alarm system per the notes and reconnect the battery.
6) Test the system.
7) If everything is working disconnect the battery and alarm system.
8) Dress the alarm harness with electrical tape to prevent noise from vibration.
9) Install the harness via wire ties to existing wiring.
10) Install the alarm module just above the kick panel via double side foam tape.
11) Plug in the alarm harness to the car.
12) Reconnect the battery.
13) Calibrate the alarm’s shock sensor to the car and installation location.
The alarm should only trigger for a hard slap on the windshield. If the shock sensor is set too sensitive false alarms will be generated by random noises such as engine / exhaust system cooling.
Bumping the windshield with the heel of your hand should only generate a series of chirps from the horn.
14) Reinstall the driver’s side under dash panel.
Your done!
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