TOPIC/QUESTION: "I'm installing a remote starter system and I have 2 wires from the system that indicate main ignition 1 and ignition 2 and I'm finding 2 wires in the ignition harness that show power when the ignition is turned on, are these the ignition wires I need to connect to and which one is the main ignition and which is the 2nd?"
ANSWER: A "main" ignition wire (or a.k.a. "true" ignition wire) is always the wire that shows NO +12VDC power as soon as you probe the wire with the ignition OFF, and then it immediately shows +12VDC power with the ignition ON and during start/crank (the +12DC power does not drop out when your turning/moving the ignition from ON to start/crank). This is a vehicles' main ignition wire. Now, many, many vehicles have 2 ignition wires that will test exactly the same as just described, meaning that the vehicle basically has 2 main ignition wires, and it would not matter which 1st or 2nd ignition output wire from the system you used to connect to the 2 ignition wires that tested the same in the vehicle. And both these wires must be connected to when installing a remote starter system or you may find that the ignition will turn on when you go to test the remote starter installation, but the vehicle either won't crank or cranks but doesn't start.