2004 Focus Defroster with Compustar

Hello All,

Trying to wire a Compustar 2WSS-AS Alarm/Remote Start system to trigger the Rear Window Defrost of a 2004 Focus.  As you all probably know that Compustar accessory output can be programmed to pulse from 1 to 99 seconds or latch.  My problem is that when I wire it to pulse, the defroster on comes on for the length of the pulse.  If I select latch it stays "latched" indefinitely, even after the the vehicle is being driven.

Am I tagging the wrong wire to use the "pulse" trigger?  Shouldn't I be able to "pulse" the rear-defroster and just let the "factory" timer control how long the defroster stays powered?

Any advice would be appreciated.

Half

Mike,

I am 99% percent sure that the BLACK/ orange (-) @ the junction block is the wire that I tagged.  Unfortunately, it still results in the defroster only staying on for the length of the pulse.  Could it be that the pulse needs to be a specific amount of time to work properly (not too long or too short)?

Thanks again,

half

That is a possibility that I had considered, but I was concerned about any excess wear and tear on the defroster and heated mirros with them active upon every remote start, am I being paranoid?

Thanks again...

Mark

so install a simple on/off switch between the trigger wire and the rear defog.  if it's not cold enough to frost up your windows, turn the switch off.  then your rear defog won't go on.  if you think it'll be cold overnight, turn the switch on. works fine for me.