I recently had my 94 318is broken into... long story short btwn stolen audio and water damage to the cars electrical units it ran a little over 8 thousand dollars.(insurance covered most)
I do have the stock BMW oem alarm... it dosent have motion sensors or shock. The way the theif broke into the car was via window.... Pretty much my alarm didnt have any protection against it.
My question to you guys:
Is there a way to add "add-ons" to my stock car bmw oem alarm?
I see stellar as well as a few other companies make the "motion sensor" add ons
Idealy, I wanted to add a Two-zone/2-stage motion sensor which provide a warning alert when an exterior zone is violated and trigger the alarm if a second, interior zone is violated.
*Is this at all possible, has anyone done this?
****Also, does the stock OEM alarm have inputs?
Ive seen add on products such as this by DEI and Stellar:
507T DEI- Best electronic motion detector. Compatible with all alarm systems that have negative trigger input. (0.6Lb) DEI 507T.
Crime Guard AU94T $60
Dual Zone Motion Sensor
Can these be added onto my stock BMW system?
Thanks, I appreciate responses... just got my car back and I dont want the same thing to happen again, looking to get this done this week.
I just went to Bavarian Autosport | BMW Parts and BMW Accessories because they sell the OEM alarms, I can't tell from the pictures. If I were you I would call them and just ask them if the OEM alarm has the inputs that you need. They are very friendly and they may even sell the add-ons. They do sell Stellar systems that are wired to go into the "pre-wired" E36s, so I think the addons you are looking at go with that system... but I am not 100%... just call up bavauto though and they'll tell you for sure.
The BMW/Alpine system is supposed to have glass-break protection, there should be a mic right next to the warning LED, or on the underside of the alarm brain depending on which one you have (pre or post "1995" pre '95 have the rectangle 3 button remote with a removeable coded chip, the post 95 ones have a round 2 button remote with a code built in). If you open up the brain on either, you can adjust the sensitivity, mine was set way too insensitive (braking glass bottles inside the car (into a bucket of course) wouldn't set it off before, but now just tapping on a window with a washer sets it off)
The best way that I can think of to add another sensor would only allow a full trigger of the alarm. The BMW/Alpine system has an input for the hood sensor. It is the single pin plug that comes off of the body and alarm brain harness. I think it is a white/red striped wire. If you look at pictures for an OEM alarm install you should see it. Anyway, pick a sensor that you can adapt the trigger output on, and splice ( and solder it correctly) into the hood sensor wire. Isolate the two sensors with diodes, one on each wire from the sensor before they meet at the splice, and a trigger from either the hood sensor or the new one should set it off.
I don't know exactly how the hood sensor triggers the alarm (a -ground, +voltage, or a combination of +voltages or how much). I am assuming you have some electrical knowledge if you are screwing around inside of your BMW, and know what a diode is and does. I think I have seen this somewhere else on the web in a write up, however, I would just use a voltmeter to test it out myself.
These are just ideas of mine, I take no responsibility for you screwing up your own BMW blah blah blah.
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