Clifford GP500 Installation Manual page 26

Re po si tion the con trol unit as far as pos si ble from heavy
p
wire looms and metal.
Verify that the re mote con trol bat tery meas ures at least 3
p
volts while trans mit ting.
Verify the voltage at the control unit between the 5-amp
p
fused power line and each of the two ground lines measures
at least 12.0 volts (if less, make sure both chassis grounds
are solid; if the grounds are solid, the vehicle battery may
need charging, servicing or replacement).
24 GP500