240sx Radio Wire Harness Confusion..

[RHS13KNetics]

the problem is the harness has 4 wires and the gorund wire left, my car has 6 outgoing wires though..... any ideas? theres a wire coming from my car that u cant see, its Red with black stripe

http://img66.imageshack.us/img66/8304/240wireca8.jpg (http://imageshack.us)

[deesz]

12v-red/black
ignition-blue
radio illumintation-red/blue
power antenna-black/red
left front speaker- (+ brown/white)(- brown)
right front- (+blue/white) (- blue/yellow)
left rear- (+ purple) (-pink)
right rear- (+ red) (green)

any other wires might be a negative dimmer etc.
these cars dont have a ground wire so you ill have to ground it to the chasis.
if you have left over wires just tape them off you dont use them.

[projectRDM]

Dimmer is red/yellow. The only other wire you may have is a light green/red, that's the OE amp turn on wire.

[RHS13KNetics]

thanks everyone i appreciate your help

[g6civcx]

http://www.bagotronix.com/nissan_240sx_stereo.pdf

The only thing I disagree with is treatment of the Light Green wire. If you connect it to antenna power, the amp will only receive power in radio mode, not any other mode, because the power antenna wire is only active in radio mode.

I would connect the Light Green wire directly to the Blue wire on the body harness, but I would put a fuse in front of the Light Green wire because the Blue wire may deliver up to 15A max.