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Old 10-12-2012, 11:13 AM   #48
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Join Date: Aug 2012
Location: Tucson
Posts: 138
My Ride: 2000 323i
Looks good! Oh yeah, I did take a look at how that shock sensor was plugged into the OEM hood pin. So it's basically what I thought, the wire he taps into is a trigger wire for the OEM alarm. So when the hood pin opens, it send a signal to the DME and that triggers the alarm. So if you put a shock sensor, and wire up the trigger wire (green or blue, your choice) to the hood pin trigger output, then it will work. YOu should diode isolate it though, just to be safe. A pack of 2 diodes are around $2 at the shack. Use 1 amp diodes model 1N4007. Look at the diode tech sheet on how to wire it up, if you need a diagram, let me know.
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