avital4000, 451m 99 subaru legacy outback

I recently purchased a used 99 subaru legacy outback with factory Alpine keyless/alarm and a Dei Avital 4000 remote start already installed. The door locks were never incorporated to work with the Avital RS, therefore I've been using two remotes...hate it. I know it may not be neccessary, but to be safe and not overload the ouputs on the Avital, I ordered a 451m after research on door lock types (I have 3-wire negative, type B...tested at switch and kick panel) and just have a couple of questions.

1) The Avital has two negative pulse outputs on a 3-pin harness, blue and green. The 451m has a ribbon cable that will plug into the Avital unit with the same blue and green outputs but I'm not sure what to do with the red wire that is also on the 3-pin harness. Leave it, cut and cap it, or connect to ground or 12v? 

PURPLE / purpleblk w/fuse= GROUND

grnblk= lock (to subaru, wht/red-)

blueblk= unlock (to subaru, wht-)

brwnblk + whtblk= not used?

3 pin harness to Avital unit (red wire=?)

Would this be correct? (fill in ?'s if needed)

2) I have to disarm the subaru "factory" Alpine alarm/keyless with the oem remote before remote start. Would this be taken care of if I connect the disarm wire from the Avital to the subaru disarm? I've read, after searching the forums, that the subie factory alarms are picky about the disarm...must use oem remote unlock (key in door and/or ignition doesn't disarm...I tried). I know one way around this would be to put the alarm into valet and just use the keyless (as I've been doing lately) but it would be nice to have the added security. 

3) The installer ran the tach wire across the engine bay in a real shoddy manner. If I were to temporarily disconnect and re-route it, would the tach signal have to be re-learned?

Sorry for the long post, I've been searching the12volt for the past two weeks, these are the only things I was unsure of. Thanks to all in advance!

1) what you're doing there doesn't make much sense, no offence, but the power locking harness that came with the avital unit would've done the same job as the 451m, just take the green and blue wires straight to the two wires you were going to connect the grn/blk + blu/blk, these wires will be triggering factory locking relays, so no need to worry about frying the output of the unit

2) not too sure about the factory disarm part, someone else might chip in there.

3) re- run the wire with the engine off and you shouldn't have to relearn the tach routine.

before i posted this i couldn't find the posts above under this topic, i reposted my answer that i posted this morning and bam all the reply posts appeared,and then i had to hit edit, i hope something is  malfunctioning around here, or else i'll have to look for physciatric help,

the avital add on will have a negative trigger input to activate the r/s, connect this wire to an auxillary channel from your alpine alarm,(it's normally WHITE/ blue on dei r/s add ons), i could be wrong but, since the alpine is aftermarket i don't think there would be any arm/disarm wires to connect to, you'll just have to do it manually,