Aux wires

I have a cammando fm-5005 combo alarm system. The manual that came with the system says that one of the wires is for horn output and that it may be be programmed for an ignition 3 relay trigger???? what does that mean? i downloaded a manual for the same system off the net and it that one says i can use it for a 3rd aux. can anyone tell me what that wire really does thank you

Sounds like a programmable wire that can be set up as ign 3. Some cars have just 1, some 2 and some have 3. What yupe of car are you installing into. Some vehicles have the 2 ig wires and then a 3rd that actually runs the blower/hvac. All depends on the application you are looking for. Jeff

Always Verify Wire information before Connecting! Just a Darn Good DIY'R

i have a 2001 honda accord lx sedan so besides the horn what else can i hook that wire up to? could that wir be used to hook up windows, trunk etc?