BASIC remote entry questions

[CueBall]

I have read the posts here about remote entry insallation. Also reference Dan Q's page (see here):
http://home.comcast.net/~dquicker1/s...ess_Entry_DIY/

I have the Viper 211HV. Connects exactly like the Valet 712T (same color wires for same connections per Dan Q's) Perhaps these are both made by Directed electronics?
That being said, mine also has several other wires not lised in Dans install. (see skipped/missing numbers in Dans wire harness H#'s) Probably because they aren't used.
That's where my questions come in...
1. Horn, lights, lock, unlock; should ALL output signals be (-) negative/ground/earth for the yaris?
2. Is it necessary to connect the H1/7(lock GND) and H1/9(unlock GND) to ground? Wouldn't this be handled by the H1/11(GND)? Note: there are no special ground wires for the horn or lights.
3. Lastly, I do not want/need to do programming and ignition controlled door un/locking. So, is there any need to wire the H1/15 ignition wire? (other than those two features.)

Basicly, if all I want to do is lock and unlock with the keyfob, do I need anything more than H#'s 1-5-8-10-11-12?
I dont want to tap more wires than I really need. Thanks.