for those of you who have added the shock sensor to the oem alarm, did you place your sensor inside the hood or inside the cabin? why? getting ready to do mod tommorow-

 

i stuffed mine behind the power duct, but I'm not all that thrilled with it. the front of the car became pretty sensitive to shock while the back was pretty numb. I think a more central location would be better. Right now I have the shock sensor turned way down so it doesn't go off when a loud noise goes off. If you can bury the shock sensor inside, it might make it more noise immune.

 

Are you using the DEI sensor? If so, wire tie it to a wire harness. Failing that, velcro it to an air duct.

If you do that, location sensitivity and high-frequency sensitivity go way down and low frequency sensitivity (What you want it to trigger on) stays high.

The harder you mount the 504, the more it false triggers.

 

but with headlight theft, if the back isnt as sensitive as the front, is that a problem?

 

Oh, if you put it under the hood it is not waterproof or temperature proof. If you're all worried about the headlights, I'd put it behind the light and tied to the harness there.

 

I personally would put it in the cabin, for the reasons that El duderino gave (not water or temp proof). If mounted properly you should be able to get decent coverage to the front of the car.

A good mounting place makes a world of difference.

 

I zip tied mines to one of the cables running near the battery compartment. DEI recommends you not to mount it on a solid piece that won't move because shock vibrations is the whole point of adding this mod.