The DEI shock sensor that you can hook up to the OEM alarm.
Courtesy of JCsE46
1.) Area of install (see pictures). We will be splicing the sensor into the hood-pin trigger wiring.
2.) Unplug wiring harness, note that the purple wire is what we will be splicing into.
3.) Connect the wires... Yellow to Ground (NEG), Red to constant 12V (POS). Choose the wire of sensitivity and splice into the purple harness wire previously mentioned (Blue/Low Sensitivity, Green/High Sensitivity)
4.) I mounted the shock sensor along the plastic housing near the back since it wasn't the vehicle body or a metal part (per DEI instuctions). This area is also flat and more susceptible to shock. 3M heavy duty two-sided tape was used to mount sensor (P/N 6010ES) as it is strong and resistent to heat.
5.) Cleaned up install with wire housing tubing and tucked the power lead underneath the weatherstripping running along side the strut tower.