Motorola PRO-900 - Manual (Page 14)

128-6847A
14 of 16
14
Circuits may be used only if the above circuit is not available.
To connect to the key in sensor as shown in method 1:
A. Locate the control wire that connects the drivers door pin switch to the key in sensor switch.
B. Cut this wire and connect the ignition cylinder side to chassis ground.
C. Locate the key in sensor switch wire that connects the chime module to the ignition cylinder .
D. Cut this wire and connect the ignition cylinder side to terminal #30 of a P&B VF45F11 or equivalent relay.
E. Connect the cathode (striped) side of a 4002 series diode to this same wire, and connect the (non striped) side to
the negative shut down safety wire (Gray / Black) of the Audiovox Remote Start Unit.
F. Connect terminal #86 of the relay to a fused +12 volt constant battery source.
G. Connect terminal #87 of the relay to the Chime Module side of the previously cut wire in step D.
H. Connect terminal #85 of the relay to the Drivers Door side of the pin switch wire previously cut in step B.
NOTE: A second 4002 series diode may be required to maintain the integrity of the hood open, shut down circuit. If
METHOD 1
this is the case, it must be installed as shown in the diagram above. The anode (Non Striped) side must be
connected to the Gray/Black wire of the Remote Start Unit. The cathode (Striped) side must be connected to
the hood pin switch. If the hood pin switch is also used for an alarm trigger input, be certain to use the dual
diode assembly packaged with the Audiovox Remote Start Unit as shown below.
METHOD 2
To connect to the key in sensor circuit as shown for method 2:
A. Locate the control wire that connects the drivers door pin switch to the key in sensor switch.
B. Cut this wire and connect the ignition cylinder side to chassis ground.
C. Locate the key in sensor switch wire that connects the chime module to the ignition cylinder .
D. Cut this wire and connect the ignition cylinder side to the Remote Start Negative Safety Shut down Wire Gray/Black,
using a 4002 series diode as shown above.