ignition kill relay on alarm not working

I've just installed my alarm which includes an ignition kill relay. I've wired it up to the ignition wire. It's a basic relay, so both green wires in series to the ignition wire (which i've cut between the connections) one wire to the alarm and one to permanent 12V. The alarm is triggered in arm when the key is turned to ACC, but then the alarm goes off in ignition position! Also the car starts when the alarm is in arm. Which it shouldn't. I'm just wondering whether the alarm and 12V wires are the wrong way around? Thanks for any help.

I think i've wired the alarm trigger and the 12V wires the wrong way around as there is a diode in the middle of them. Would this be the reason why the alarm turns off when i turn the key to ingition once it's been triggered??

Show us what connections you made to which relay terminals, also you haven't mentioned either make and model of car or alarm. P.S. NEVER cut the ignition. It's too dangerous, things come adrift whilst you're moving, only cut the starter. Here's how to correctly wire it:- cut.bmp Also don't feed from a constant, relay always engaged, = flat battery overnight.

Also connect wire on alarm marked "ignition input" to ignition.

thanks for that howie, the car is a 2000 ford fiesta. so from that diagram, i should have wired the relays switched 12V to the ignition wire (as that is switched) instead of a constant 12V. I've no idea what colour the starter wire is either, I originally wanted that for the relay but couldn't find it so i just used the ignition.

oh...and the ignition wire is wired up and works correctly.

https://www.the12volt.com/installbay/forum_posts.asp~TID~58946 just found this, will look for the start wire tomorrow.

the link i just posted says the starter is blk/blu - i'm 100% sure that's the ignition wire that i've used.

@Howie - since i've used the ignition wire as the immobiliser, can i also use the ignition as the relays source of switched 12V? if so, which end would i connect it to since the ignition wire is cut. 87 or 30?

You shouldn't use the ignition as the immobilizer. If something ever happened and the alarm failed armed it would cut your engine off... and if you are traveling down the highway, that could become a very bad situation. ALWAYS use the starter wire as the immobilizer. I would disconnect the relay from your ignition wire, solder the ignition wire back together along with the ignition input to the alarm, then re-install the relay onto your starter wire.Kenny

Owner / Technician

KKD Garage LLC

Albany, NY 12205