Installation guide

© 2006 directed electronics
14
type C: reversing polarity
Interfacing with a reversing polarity system requires either two relays or one 451M
(not included). It is critical to identify the proper wires and locate the master switch to
interface the door locks properly. Locate wires that show voltage on lock and unlock.
Cut one of the suspected wires and check operation of the locks from both switches.
If one switch loses operation in both directions and the other switch operates in one
direction only, you have located one of the target wires. The switch that lost all oper-
ation is the master switch. If one switch works in both directions and the other switch
works in only one direction, you have a Type A system. If both switches still operate,
but one or more doors has stopped responding entirely, you have cut a motor lead.
Reconnect it and continue to test for another wire. Once both wires have been locat-
ed and the master switch has been identified, cut both wires and interface as shown
in the following diagram.
IIMMPPOORRTTAANNTT!!
If these wires are not connected properly, you will send (+) 12 volt
directly to (-) ground, possibly damaging the alarm or the factory switch.
IIMMPPOORRTTAANNTT!!
Do not connect the outputs of the alarm directly to the actuator.