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I originally got this X-Ref by measuring the various combinations on both TPS sensors - I made the changes and verified that the sensor with the new connecter operated as expected. I then double checked that against what the service manual says I should be seeing at the connector.

Here is the cross reference if you're looking at the TPS side:

Pink = Blue
Light Grn = Yellow
Grn/Ylw = Black

Here is the cross reference if you're looking at the harness side:

Pink = Blue
Light Grn = Yellow
Grn/Blk = Black

Here's a little additional information you should ignore unless you're just curious:

To figure out the wiring, it's easiest to make a little chart of each carb showing the results of each of the three possible combinations. These are referenced from the TPS side - substitute Grn/Blk for Grn/Ylw for harness side.

2004 42mm Stock TRX450R carb:
Resistance at: Closed throttle --> Open throttle
As measured between wires

Pink to Grn --- Hi --> Lo
Grn/Ylw to Grn --- Lo --> Hi
Pink to Grn/Ylw --- Hi --> Hi

2003 40mm FCR Carb from CRF450R
Resistance at: Closed throttle --> Open throttle
As measured between wires

Blue to Ylw --- Hi --> Lo
Black to Ylw --- Lo --> Hi
Blue to Black -- Hi --> Hi

Enjoy.


Here is a picture of a CRF carb hooked to the stock wiring TPS harness.
 

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