proximity sensor IV and shock sensors

I have a Clifford IG8000... my question is this -- where is the best place to install the proximity sensor? I glanced through the IG8000 installation manual and noticed that Clifford suggests putting the sensor on the ceiling, etc, but NOT on the windshield (must install on something metal). However, the place I got mine installed put it on the windshield above the rear-view mirror. I have been rather dissapointed with the consistency of the sensor, as sometimes I can nearly stick my hands all the way to near the radio without the alarm going off, and other times I put my hand along the driver's side window and it does go off. I've adjusted the sensitivity, but the inconsistency continues. Is the placement of the sensor causing this? Or are proximity sensors just not that accurate? Thanks for any responses! Jeff P.S. -- I also this same installer to put in a shock sensor,,, I find out, however, that they installed an Audiovox shock sensor, not a G4 sensor... If it worth buying something like the OmniSensor? Is there much difference? Thanks!

wxguy1 I've tried several different sensors in many locations and some are moderately better than others but they are all inconsistant like you describe. I am still hopeful that someone will come up with a better unit, but I haven't found it. I am now looking for some sort of IR or light beam that can be set up so if someone breaks the beam the alarm will go off, but I have not found such a character. If someone knows of a device like this I would scrap the proximity sensor.

The only thing I really know of that does that is a garage door sensor... Actually, if modified correctly, I'm pretty sure you can get that to work for ya... you can put it from the front driver's pillar (between the windshield and the side window) and the rear pillar (between the rear window and rear-passenger's side window)... Hmm... I'm thinking now...

Last one I installed stated NOT to install on metal and NOT to install in direct sunlight (widshield). I can tell you for sure that they are really sensitive to temp changes. I usually endup adjusting mine twice a year. Once when it starts to get cold then again when it get hot. That with mine mounted IN the center console lid of my blazer.

wxguy1 wrote: The only thing I really know of that does that is a garage door sensor... Actually, if modified correctly, I'm pretty sure you can get that to work for ya... you can put it from the front driver's pillar (between the windshield and the side window) and the rear pillar (between the rear window and rear-passenger's side window)... Hmm... I'm thinking now...

I have the one from a garage door, but it is rather large. I have a convertible so there reallty is no good place to mount such a large sensor. I haven't even looked at the voltage yet because the size is such an issue. Good suggestion, but I am hopeful someone will build a smaller one designed for cars.