Who here uses an Escort Shifter ZR3? And who uses the rear mounted transceiver on the rear? Although one unit is good enough to give you time to slow down, some people claim that it is ineffective, but i have a solution to this. Simply put a splitter on the rear input on the control module and hook up another rear transceiver. That'll do the trick for optimal rear coverage.
I fitted mine yesterday. Testing it on Monday. Will let you know of the results.