I have a miata and my friend gave me his old proximity sensor. I think it's a 508tc. That's what's on the plastic anyway.
Currently I have a viper 600 installed in my car. I see the 4 prong hole for optional sensor on the alarm itself. However, the 508tc proximity sensor only has 3 prongs. I also dont have the cable that comes with the proximity sensor so I made one up from another older alarm. I connected the positive and negative to the sensor and the lights blink green and red. I connected the last prong on the sensor to either one on the alarm itself but it doesn't seem to work right. I get a chirp but it doesnt go off.
Any suggestions?
Thanks
Oilver
Look at the downloads section, download the Viper 600 install manual:
page 25: inputs less than 0.8 seconds will provide the 'warn away' signal .. while inputs longer than 0.8 seconds will trigger the full alarm.
On page 26 is a diagram of how to cut the pre-wired Viper wire and implement the DEI shock sensor.
Hopefully this helps
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The red and black wires are 12vdc+ and ground, respectively. The blue/green wires on the newer 508D DEI proximity sensors are dual zone, so each wire is for one zone. I imagine that your 508tc, since it's older, it's only one zone proximity detection. Therefore It may not interface with your viper 600 the same since the viper is looking for a dual-zone detector. Perhaps have you can "jump" the blue and green wire and wire it to the third wire of your 508tc. I'd wait for a more senior guy to chime in.
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The search function is your friend.
You can also meter the third wire from the 508tc and see if it's giving you a longer than 0.8 second (i.e. constant) negative signal while you're in proximity (which you will be since you'll be sitting in front of it while you meter the wire).
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The search function is your friend.