95 caprice remote start w/no status output

I'm working on a car that already had an alarm and R/S installed. The R/S was never installed i'm guessing, because there's no status output. I have no idea of the alarm but it does have a diagram on the back. The car is a 95 caprice. i could only come up with diode isolating the ignition wire to activate the relay for the bypass. Any thoughts?

Any one think of something?

Have no idea of the unit just has a diagram on the back of brain. No name on key fobs or brain.

Nothing negative out when running?

Nope. has power, ground, built in door lock relays, ignition input, starter kill output, brake, negative door trigger, siren out, 2 parking light outputs, + trunk pop, led, shock sensor, built in antenna, tach, dome supervision, seperate remote start relay pack, remote start output that plugs into remote start relay pack. doesn't even have a valet switch. made in china 2000.

Could you find the (-) for ignition in the cable between the module and the remote relay pack??

There has to be a trigger wire in the connection between the brain and relay pack to activate the ignition relays. It will probably be (-). I would test these wires.

X3 on using the ribbon cable negative ignition turn on.Installer, IT support, and FFL. I need less hobbies.

Good idea. something has to be negative in there. And better yet its not a ribbon cable but three 18ga wires. i'll check now.