Wires that pull low (to ground)

[nitro-cad]

Hey people,

I am fitting a Toad AI606 alarm and i need a little bit of help!

In the instructions, certain descriptions of wires say "connect this wire to systems that need a signal that pulls low (to ground) for an interval automatically controlled by the alarm" and "connect this wire to other devices that require a signal that pulls low (to ground)".

Can anybody tell me exactly what is meant by these phrases?

Thanks!

 

[Ozzie1989]

This could possibly be associated with total closure systems, or central locking systems etc that use a 'pulse' created by the Alarm system to activate other auxillary items. However, your best off talking to a fitter or auto electrician, they should be able to tell you

 

[JonnyBoy]

The "pulls low to ground" bit basically means a switched earth. i.e. having the switch in the connection to ground (vehicles bodywork) rather than in the positive supply side.