Here are the parts to complete kit and cost. As you can see it will cost just as much to get a new alarm kit as it would to buy my used siren and a new hood pin/sensor bracket.
I believe you need the hood pin to make the circuit complete. I could be wrong.
Here are the parts for the pin assembly and cost with shipping from THEBMEPARTSTORE
1. SWITCH613010
Make: Bmw
Update Quantity Delete Item $10.45 $10.45
2. PRESTOL-CAGE079510
Make: Bmw
Update Quantity Delete Item $0.14 $0.14
3. HEX HEAD SCREW071000
Make: Bmw
Update Quantity Delete Item $0.29 $0.29
4. BRACKET FOR DWA SWITCH61309931DK
Make: Bmw
Update Quantity Delete Item $4.66 $4.66
Sub Total:
$15.54
Estimated Shipping (+)Shipping Method : $8.50
$0.00
ESTIMATED ORDER TOTAL: $24.04
Next Step »