Remote Starts/two sources

relay set up using neg trigger igintion wire (thin wire from alarm) 85- iginition turn on wire from alarm 86 & 87- 12v 30- to igintion wire of car But usually the remote starter has 2 iginition wire. If a car has a third, its probably not need for the r/s part

i think that the wire wire from the alarm is to turn on the relay. (cant find diagram for that alarm). But that relay setup above is right. To test iginition wire. Turn to run position it should show 12v. Now turn to the start position. It should only drop a tenth of a volt, not all the way to zero and read 12v. If it drops to zero, wrong wire.

Just did another Matrix this morning---it's a pretty easy car. The Matrix has two ignition wires------ a BLACK/ white and a BLACK / YELLOW. One of them allows the engine to run; the other powers up the climate controls and other items. Both wires behave the exact same way, and it really doesn't matter which one you connect as Ignition 1 or 2. The blue/red accessory wire on the Matrix powers up the radio, mirror controls, and other non-essential items.......I prefer the radio to remain off during remote start, so I don't connect it at all.....but that is up to you.

Todd, you sent me a private message about whether your car needs an interface. Corolla and Matrix 2005-up have an anti-theft transponder built into the ignition key. You will NEED to interface with this, or the remote starter won't work. You can get any of the universal transponder bypass boxes that are on the market, but they require that you PERMANENTLY sacrifice one of your spare keys. Audiovox AS-TCBM, DEI 556U, Trilogix (bypasskit.com) TBKIII/TBKIV, Omega PASS-4.........they're all a little different, but pretty much the same idea. You might also see if bypasskit.com has a no-key-required bypass for your car. They are usually more expensive, and more complex to install, but it allows you to keep all your keys.