91' Accord ign wiring

Why does the wiring diagram show two ignition wires where there is usually one? What's the difference between the two and does it matter which one is utilized for an alarm. Thanks for any info

If your installing a standard non remote start alarm then just pick one. It doesn't matter which If you installing a remote start then you need to power up both. For what ever reason the automakers decided they need to split up the power going to the ign,tranny puter, and regular puter into seperate circuits at the ign switch instead of just at a buss somewhere. All need to be powered or the damage could occur at worst and at the least something won't work (a/c windshield wipers, tranny)