relay set up?

So my friend gave me his used compustar p2wss and im working out the entire install to make sure I do it right. his was installed in a 05 sti and my car is an 03 civic. These forums have been a ton of help so far! Ok so the guy that installed it in his car used a relay with the output to starter kill in spot 85 the 12v constant in spot 86 and in spot 87a he has the output to starter and another wire comming out of it that i suspect he attahed to the wire coming from ignition switch also in in spot 30 he has another wire coming out that should also be attached my guess to starter motor? if anyone that understands relays better than me could look at this and just tell me if it makes any sense and if I have the connections right it would be very helpful. also with this setup do I cut the ignition wire and attach 87a from ignition and the other way toward starter motor to 30 or do i just tap the 87a into the ignition wire and 30 into my starter wire?

any help is greatly appreciated!

ok im sorry I messed up on my origilal post because there are two red wires and I messed them up, the relay has the output to ignition in spot 86 so it goes like this

86: output to ignition

85: output to starter kill

87a: output to starter and an etxra wire attached to nothing

30: extra wire attached to nothing

so now that I have my wires straight does this make sense and if so where do I need to attach the extra wires comming out of 87a and 30?

ok so if I change it to look like this what should I use for the ground when armed of compustar in 85? will any ground in my car work or is there a specific wire coming out of the compustar that I need to use? will i have to use the compustar wire labeled output to starter kill at all or is this relay going to mean I dont need that? and what about the wire coming from the compustar that is labeled output to ignition since i will be hooking up the cars ignition to the relay will i not have to connect this anywhere? just to clarify I will need to cut the starter wire while doing this right?

The normally closed contact of the relay is in use here, so it's basically failsafe! Also relays tend to be very reliable regardless of the fact that they're not bosch or tyco! Been installing for years now and i've only seen a handfull of  relays go bad, and in all instances it never caused a no start situation in a vehicle!