2003 Focus

First alarm in many years - so I may end up with lots of questions.  Here's the first one.

I've used the door trigger & dome light as the same thing in the past.  However, the 2003 Focus has a courtesy light upon exit - so I'm probably going to need to use a relay.  Question: Is the door trigger wire noted in the diagram [Blue/Black (-)] the same used for the dome light?  I see on the Mustang it's a BLACK/ White wire.

Well, the problem is that the alarm has a dome light output also.  Can I just tie those two together, because they give me some funky relay configuration to use in the manual but I don't know why.

The alarm shouldn't turn the dome light on when the arming so I wouldn't see why it should cause a problem.  On disarming the domelight should come on but it shouldn't bother the sensor.

What do you think?

the reason they give you the relay diagram is because most alarms only support a  200mA output. unless it has built in relays.  

NO you cannot just tie the two wires together, you must use a relay.

domlight output wire goes to pin 85 of relay.(-)

pin 86 goes to 12 volts constant.

87 goes to ground.

30 goes to the door trigger wire from alarm.

             hope this helps, good luck and have fun!!!