separate alarm and rs units problem

Hello, I had an TRC XT-2000 alarm doing nothing in the box for a few years and a Bulldog Security RS-82 remote starter I got as a gift a while ago. Today I decided to put both in my 1998 Plymouth Breeze. Both are working fine, however, they don't work right together. With the alarm armed I press the Start button on the RS and the alarm trips. There is a "Factory Alarm Shut Down Wire (-)" on the RS unit. Can I use that somehow to keep from tripping the alarm when I use the RS? Thanks. Robert

Yes, if the alarm has a disarm input wire.

[QUOTE]Yes, if the alarm has a disarm input wire.[/QUOTE] It does not. [QUOTE]It'll be easier for you to get a combo unit (alarm/remote start) -- however, if you do not have a disarm (-) input wire on the Alarm brain, then you'll have to create a relay using the ground-while-running (i.e. status output wire (-) ) off the r/s brain to trip a relay to disconnect the ignition input to the alarm (i.e. defeat the alarm ignition sensing while remote starting only). However, if you have a shock sensor on the alarm, you'll have more difficulty defeating this as well -- i don't know if a relay will work to defeat this.[QUOTE] It's a cheap car, I wanted to use what I had and not spend money on a combo unit. I did not use the shock sensor, I find them annoying. Is this how I would use a relay to do what I need? (+12v)-----85    86-----(Shutdown on RS -) (ignition)-----30    87a-----(Alarm) 87-(unused) So when the RS is activated it provides a ground for the relay which breaks the connection of the ignition to the alarm. Would a diode be needed? Thanks.