2003 maxima m/t compustar 2w900fm s

The compustar has no neutral safety wire, but you can use the hood pin wire on the compustar (-).

Use the neutral wire from the Maxima to tie into a relay that will NOT show a ground signal to the hood pin when the car is in neutral (safe time to remote start) but WILL show ground when the car is in a gear (bad time to start).  You said this is an "S" model, therefore, no alarm.  So, this method should work.

You can also use the E-brake wire from the maxima to do the same thing -- when e-brake is up, hood pin will see no ground.  When e-brake is down, hood pin will see ground and therefore not allow the car to start.

Well -->

we'll call the e-brake wire or the NSS wire the "nissan" wire:

If the nissan wire gives a (-) signal when active (i.e when the car is in neutral or when the e-brake is up), then you can tie that in as follows on a 5-pin SPDT 30A, 12v relay:

85: nissan wire

86 12 volts fused

87 nothing

87a   compustar hood pin wire (-)

30 chassis ground (-)

That way, a negative signal from e-brake or neutral would shift the SPDT circuit from 87a-30 to 87-30, connecting neutral/nothing to the compustar hood pin, and thus the remote starter will activate.  And when the car is not in neutral or no-ebrake is applied, then the hood pin will be connected to chassis ground and will not start.

you'd have to do two relays in a row:

relay1:

85: NSS wire (-)

86 12 volts fused +

30: chassis ground (-)

87a: nothing

87: terminal 30 on relay 2:

=====

relay 2:

85: e-brake (-)

86: 12 volts fused +

87a: nothing

87: compustar hood pin wire (-)

30: from relay 1, terminal 87.

----> this way, you'll need the negative signal from e-brake AND nss wire to conduct the chassis ground (-) through relay 1 through to relay 2 to the cs hood pin wire.

What brain do you have dude?

thats my 2 cents.

Perfect.    NO need for the neutral safety wire. Next issue I predict, will be bypassing the clutch.

Send a negative "start" signal to the lt.blue at the switch above the pedal.