88 Mercury Sable alarm/remote start

Ok first I just wanted to say you guys are life savers and information here is Gold to me since I have learn alot ok now down to business lol

Ok I have 2 problem that I just can't figure out I just purchase a Galaxy 5000RS2W Plus with remote start include in it well my problem is that in the starter defeat/Anti- Grind diagram it shows me this

what cofuses me is that there are 2 yellow wires (+ ignition) in the alarm wires since there is a yellow wirer in the 6 pin harness that is for the remote starter option (+IGNITION OUTPUT) & a yellow wirer label ( +12v Ignition Input )20 pin main harness and my question is which one do I use for the starter antigrind relay the one in the 6 pin or 20 pin harness? since the diagram doesn't specified which one to use and if I use only one of the yellow wires for the starter antigrind setup, where should I connect the other yellow wire? also the violet wire comes from the 6 pin harness and the orange wire is located in the 20 pin main harness, so when I cut the ignition switch (to starter) do I just solder the violet wire, (TO Starter) wire together without any fuse or diode or what can I do lol and my second question is the main harness asks for a positive door input and for a negative door input and where are these two wires located in the car i looked everywhere for the info but I haven't found anything about it, do I just use the positive dome light wirer for both +/-? lol almost forgot to ask this other question this car had a cheap alarm system install that was not factory just connected to positive and negative battery terminals what I wonder is that when I pop the trunk and the alarm was activated it didn't sound at all but when i pop the trunk it sounded the alarm so why didn't it sound when the trunk was popped and is there a way to make the alarm know the trunk is there?

Any help will be greatly appreciated :D thanks in advance

CAn anyone help with any of my questions please

*UPDATE*

Well everything works fine on the alarm side of the system haven't try the starter option yet since battery died lol but I do have a problem with the door lock & unlock (Keyless entry). I was reading on door locks and got confused, so I want to know do  Mercury/Ford use reverse polarity or they use something else?

I was looking at reverse/polarity but I am not sure if that is the right setup for this car, so if  anyone can point me in the right direction that will be great lol I was trying reverse polarity but I just notice that I need all 5 points and the relays that they only have 4 point but they are still SPDT 30/40 amps but they don't have the 87A point so I was wondering if there is any way to use them since in reverse polarity that point is use and same thing in my car alarm diagram. any help will be greatly appreciated

Ok I don't understand what you mean with the #notes this car has power locks that came with the factory is not an aftermarket system so what you are saying is to use the (4 Wire Reversal Door Locks) or (Actuators / Reverse Polarity) which one since I need to finish this thing as soon as possible lol and can you please tell me if I can use a 4 pin SPDT relay isntead of a 5 Pin relay since that is all I got for now is the 4 pin relays thanks in advance .

did the car come with keyless entry from the factory? Yes then you have a - system

If it came without keyless then you have 5 wire or Reversal rest at ground

If you have anymore questions i sell Scytek(Galaxy) alarms so PM me i can help