avox aps997a w/ 556u in 03 isuzu axiom

Yes, you can use the light blue, Ignition 3 output to go to the blue status on the 556U. Also, as another choice, do you see the small two-pin yellow plug on the side, and they give you a plug with a very short length of black and red wire that plugs into it? Well, that red is constant 12 volts output, and the black is ground-out-when-running just like Ignition 3. So I usually use those two wires for my transponder bypass. Also, you won't need it on your Axiom, but if you look in the programming menu, there's "transponder bypass output." You can select "during start," and the black wire will output a ground only until the car starts, then it'll shut off.............that's good for some of your harder cars that can't see two keys at the same time. ARM/DISARM: use the four-pin harness, with the black wires with stripes on them. DISARM: use BLACK/ blue, "pulse before start." It'll put out a pulse when you unlock, and also before remote starting. NOTE: If in the future you have a different car, look at the last feature in the first programming menu. You have "single pulse" and "as feature 1" or something like that. Basically, if you program the unit for, let's say, double-pulse unlock, and then you change that other one to "as feature 1," you'll end up with a double-pulse disarm output too. ARM: BLACK/ green. Makes an output every time you lock, and also, just after the car remote starts.