Fan wiring question.
Fan wiring question.
The fan connector was to the passenger side fan (call it connector2) was hardwired and I had to cut the wires to get the fan out to replace the alternator.
Unfortunately I cut the splice and lost the colors that match the fan wire colors to the harness colors.
A search is getting me more confused than ever.
Fan side colors are green, blue, black and yellow.
Harness side colors are red, blue-white, black, yellow-red.
Can someone take a look for me and tell me what their passenger side fan connector colors match up to??
Unfortunately I cut the splice and lost the colors that match the fan wire colors to the harness colors.
A search is getting me more confused than ever.
Fan side colors are green, blue, black and yellow.
Harness side colors are red, blue-white, black, yellow-red.
Can someone take a look for me and tell me what their passenger side fan connector colors match up to??
For future help:
The driver's side wiring is fan to harness
green to green
yellow to black
blue to blue
black to yellow
fan side functions:
Green sense
Yellow high
Blue low
Black ground
High/low/gnd wires are swapped (blue still blue) on harness side to make fan pull not push.
The driver's side wiring is fan to harness
green to green
yellow to black
blue to blue
black to yellow
fan side functions:
Green sense
Yellow high
Blue low
Black ground
High/low/gnd wires are swapped (blue still blue) on harness side to make fan pull not push.
Last edited by shurur; Jan 16, 2026 at 07:38 AM.
Went to a salvage yards and verified 2004-2006 g35.
2003 sedans were mech fan.
For future help:
The passenger's side wiring is fan to harness
green to red
yellow to black
blue to blue-white
black to yellow-red
Found that fan connectors went to different fans, so connector 1 to fan 2 and connector 2 to fan 1 on different cars. It should not matter anyway.
Again yellow and black swapped, but centered around blue is probably wired to make fans pull air in.
Tested good
2003 sedans were mech fan.
For future help:
The passenger's side wiring is fan to harness
green to red
yellow to black
blue to blue-white
black to yellow-red
Found that fan connectors went to different fans, so connector 1 to fan 2 and connector 2 to fan 1 on different cars. It should not matter anyway.
Again yellow and black swapped, but centered around blue is probably wired to make fans pull air in.
Tested good
Last edited by shurur; Jan 18, 2026 at 08:03 AM.
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sammy_G
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