GMC VSL 4000, Installation Manual, Page: 14 / 74

NVSL4000
14 - English
Connect this wire to the (+)12V ignition wire. This wire must show (+) 12V with the key in run position and during
cranking. Take great care that this wire cannot be shorted to the chassis at any point. This wire will report Zone 5.
Connect this to the red wire of the siren. Connect the black wire of the siren to (-) chassis ground, preferably at
the same point you connected the control module’s black ground wire.
Before connecting this wire, remove the supplied fuse. Connect to the battery positive terminal or the constant
12V supply to the ignition switch.
NOTE: Always use a fuse within 12 inches of the point you obtain (+)12V. Do not use the 15A fuse
in the harness for this purpose. This fuse protects the module itself.
Whenever the button(s) controlling Channel 2 is pressed for 1.5 seconds, the on-board relay is activated and will
stay activated as long as the transmission continues. This on-board relay is often used for trunk release. The relay
can drive circuits up to 20 amperes. Connect this wire to the trunk release wire of the vehicle. This polarity of
this output is determined by the connection of the input wire, H2/A, in the relay harness.
NOTE: If the H2/A input wire is not connected, there will be no output from the relay when it is activated.
H1/12 RED/WHITE high current output from on-board channel 2 (trunk release) relay
H1/11 RED (+)12V constant power input
H1/10 BROWN (+) siren output
H1/9 YELLOW (+) ignition input, zone 5