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  DIY: Alarm Motion Sensor In Convertible
2007_E93
02-22-2008
UPDATED AT THE END!!!!

FINALLY,..It took me some time but I figured out how to wire a motion sensor into the OEM Alarm on the Convertible. Works well but I do need some tweaking,..so any input is appreciated. As you may know the US...
  #22  
By 2007_E93 on 03-05-2008, 08:38 PM
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Hood Open Warning Light Solved!!!!

Quote:
Originally Posted by am_ver View Post
Would it be easier to take the car to an alarm place? Though, I hope you figure this out soon -- I plan to do this on my car once u have it figured out!!
Took me a while but I figured this out as well...

Options 2 & 3 above were going to be WAY to difficult to wire as the routing of 1 wire to rear wheel well would be crazy as far as time consuming an PITA to take everything apart. There is a way to do it in the wire path from the rearview mirror to the alarm siren but the wires run through the door and it is spaghetti and PITA also to take apart and locate and route wires.

I chose option 4 = INSTALLED A RELAY

You will need a 12V DC SPDT (single pole/double throw) relay available at Pep Boys and Adv. Auto Parts. (I have been unable to find the SPST relay with a normally closed circuit as they all seem to be normally open.) You will also need another Add-a-Circuit form Autozone. See the UPDATE above in the Original Post at the end for how to do this. Easy to do!! Works perfectly with no warnings or codes.

If you need to learn more about relays go to either of these web sites.

http://www.the12volt.com/relays/relays.asp
http://www.partsexpress.com/resources/relays.html

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  #23  
By cas on 03-06-2008, 09:42 AM
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good job. NOW WE NEED A YOUTUBE VIDEO.

I would like to see these conditions

windows down top up. stick your arms into the car and touch glove box and then steering wheel ( 2 videos )

windows and top down. climb over door and lightly sit in car. throw a package in the car ( 2 videos )

i see you have a digital camera, hopefully it has video mode

I just want to see how sensitive this is
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  #24  
By 2007_E93 on 03-06-2008, 12:46 PM
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Quote:
Originally Posted by cas View Post
good job. NOW WE NEED A YOUTUBE VIDEO.

I would like to see these conditions

windows down top up. stick your arms into the car and touch glove box and then steering wheel ( 2 videos )

windows and top down. climb over door and lightly sit in car. throw a package in the car ( 2 videos )

i see you have a digital camera, hopefully it has video mode

I just want to see how sensitive this is
Uh,....let me think about that...NO.

Seriously, it is sensitive. The passenger side slightly more than the drivers because of the e-brake metal. I can't put my hand in past 6 inches in either window without alarm going off. I have it set to about 80% on both knobs. I haven't tested with top completely down yet as it has been cooler weather here and much of my trunk and car is still taken apart with all the SHIT I've been removing to get to the bottom of this hood warning light thing. It is totally configurable as to how sensitive you want. I can make it sensitive enough to go off with someone just looking in the window with cupped hands. Sometimes it goes off with HARD trunk closing and other times not. It definitely protects the interior.

I have spent enough time on this mod and my center armrest LED that I did at the same time. Wife is about to divorce me....Someone else can post vids. You'll just have to trust me on this.
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  #25  
By am_ver on 03-06-2008, 05:39 PM
Does the sensor screw up the Valentine 1 radar detector when the car is in motion?
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  #26  
By 2007_E93 on 03-06-2008, 05:42 PM
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Quote:
Originally Posted by am_ver View Post
Does the sensor screw up the Valentine 1 radar detector when the car is in motion?
....How the hell should I know? I dont have V1 yet... Either way,....I dont mind helping out, but sometimes you just gotta answer somethings for your self.

Edit: it shouldn't b/c its completely off.
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  #27  
By sterns on 03-09-2008, 11:28 PM
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Thanks for the update.

One comment, the pdf seems to have an error, thw wiring is correct, but the relay drawing is wrong.

When the iginition is on, the coil on the relay pulls the throw closer to the coil, so from your drawing it looks like you are powering the sensor when the ignition is on, this is backwards. Terminal 87 should be closest to the coil, so you break the power to the sensor when the ignition is on.
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  #28  
By 2007_E93 on 03-10-2008, 07:11 AM
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Quote:
Originally Posted by sterns View Post
Thanks for the update.

One comment, the pdf seems to have an error, thw wiring is correct, but the relay drawing is wrong.

When the iginition is on, the coil on the relay pulls the throw closer to the coil, so from your drawing it looks like you are powering the sensor when the ignition is on, this is backwards. Terminal 87 should be closest to the coil, so you break the power to the sensor when the ignition is on.
Thanks,...you may be correct. IDK. I dont think it matters. I borrowed the diagram form somewhere else. I dont know if the coils pushes or pulls the switch. It works well though.
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  #29  
By am_ver on 03-17-2008, 11:51 AM
I got everything required for this but the relay. tried Pep boys, Kraegen... but everyone wants to know part number for it... is there a place that I can buy this online? or anyone got a part number or anything?
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  #30  
By 2007_E93 on 03-17-2008, 08:08 PM
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Quote:
Originally Posted by am_ver View Post
I got everything required for this but the relay. tried Pep boys, Kraegen... but everyone wants to know part number for it... is there a place that I can buy this online? or anyone got a part number or anything?
Try amazon.com, Google search, Partsexpress.com. No particular one needed as any SPDT relay will work.

Edit: here's one...they are readily available...

http://www.partsexpress.com/pe/showd...number=330-070
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