what company remote start is it
the neutral saftey is needed, youre supposed to have a switch to a ground
basically when i do remote starts i just ground that wire that way the remote start is always enabled, when it doesnt see a ground then it will disable your remote start. hook up your brake switch, a word of advice if you dont and you connected a wire wrong say buhbye to your wireing possibly, if anything goes wrong u can disable it by hitting the brake which sends a 12V signal to the remote start