On my engine harness side I have Yellow/Black, Orange/Black, Green/Black, and Yellow/Red wires. Sensor side has the usual Black, Black, Green, and White.

Right now, I have it:

Y/Blk -- Blk
O/Blk -- Blk
Grn/Blk -- Grn
Y/Red -- White

Is this right? Every now and then I'll get CEL code 1. Also, my idle fluctuates often between 100 and 1100 RPMs.

TIA

 

Oh, yeah. I should mention I have Hondata and that the reason I'm asking about the wires matching up is because they ripped out of the plug when I took out the motor a while back.

 

yeah thats right, if it runs not quite right swap the black wires around

 

which year GSR do you have? those engine harness wire colors don't really match up to the wire colors of the honda's I've seen. (95% of the time O2 signal is white)

 

It's a '95. Though, I haven't tried switching the grounds yet...

 

according to the Helm manual these should be your O2 colors.

yellow/black - + heater
orange/black - - heater
white/red - + O2 signal
green/blue - - O2 signal

which should match up to the O2 sensor like this...
yellow/black - black
orange/black - black
white/red - white
green/blue - green

the idle problem may be related and it may not.
Which ECU are you using? Have you checked for vacuum leaks?