btw this is for a 1990 240sx... for the 91+ 240sx, the starter is BLACK/ white and ignition is BLACK/ red and ignition2/cold start is BLACK / YELLOW.... but for the 1990, both the starter and ignition 2 are BLACK / YELLOW... (so are they the same?, if not, where is it?)
Save the guess work for your next lottery ticket purchase. Testing the wire out is the best way and only way. If you don't know how, ask and I will show you how. Below is a wiring diagram to your car. Hopefully it will sort things out for you.
DIRECTWIRE™ WIRING INFORMATION - NISSAN / 240SX / 1990 / Remote Start
12volts white + ignition harness
Starter BLACK/ white + ignition harness
Second Starter BLACK / YELLOW + ignition harness
Ignition BLACK/ red + ignition harness
Second Ignition
Third Ignition
Accessory blue + ignition harness
Second Accessory
Keysense
Power Lock ORANGE / black F driver kick panel
Notes: This is one of the three known systems Nissan used in early production. To operate, open(cut) the org/blk wire and the doors will lock, pulse the same wire to ground and the doors unlock. The other two systems are negative pulse (ORANGE / black for lock and ORANGE / blue for unlock both at the door lock timer in the passenger kick behind the ecm.) and non-centralized - add actuator in drivers door.
Power Unlock same wire
Lock Motor
Unlock Motor
Parking Lights+ RED / blue back of dash dimmer
Parking Lights-
Hazards
Turn Signal(L)
Turn Signal(R)
Reverse Light
Door Trigger RED / white - courtesy light
Dome Supervision
Trunk/Hatch Pin red - sw. or light in trunk
Hood Pin
Trunk/Hatch Release
Power Sliding Door
Factory Alarm Arm
Factory Alarm Disarm
Disarm No Unlock
Tachometer yellow/red AC ECM pass. kick panel
Wait to start
Brake Wire RED / green + brake pedal switch
Parking Brake
Horn Trigger GREEN / WHITE - steering column
Memory Seat 1
Memory Seat 2
Memory Seat 3
Interface Module: Category:
Immobilizer Bypass Required:
No Type:
N/A
Part #: N/A
Notes:
This wiring information is being provided free of charge on an "as is" basis, without any representation or warranty. It is your responsibility to verify any circuit before interfacing with it using a digital multimeter.
Directed electronics, Inc. assumes no responsibility with regards to the accuracy or currency of this information. Proper installation in every case is and remains the responsibility of the installer. DEI assumes no liability or responsibility resulting from improper installation, even in reliance upon this information.
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Be careful whose advice you buy, but be patient with those who supply it.
What? Is that correct? or is the12volt's correct? Because they look different...
Constant 12V+ WHITE/ Red Ignition Switch Harness
Starter BLACK / YELLOW Ignition Switch Harness
Ignition BLACK/ White Ignition Switch Harness
Ignition 2 BLACK / YELLOW (cold start Wire)
Accessory Blue Ignition Switch Harness
Tach GREEN/ Black Coil
Brake Switch RED / Green Brake Switch
Trunk Pin Red (-) Light in Trunk
Parking Lights RED / Blue Light Switch or Back of Dimmer
Head Lamp GREEN/ YELLOW L And GREEN/ Blue R at Steering Column
Hood Pin n/a
Factory Disarm n/a
Door Trigger RED / White (-) Courtesy Light or Purple behind Instrument Cluster
Door Lock ORANGE / Black (-) Driver's Kick Panel
Door Unlock ORANGE / Blue (-)
Horn Wire GREEN / WHITE (-) Steering Column
Regardless of who's correct why don't you test them and find out. Wouldn't that be the better way rather than relying on some infomation that someone has given to you? The information given you should only serve as a guide. You still need to test your wire.
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Be careful whose advice you buy, but be patient with those who supply it.