Here are some screen shots I use Tuner cats and EFIlive. EFIlive just lists it as connector J2 pin 49 but doesn't list it as ABS like Tunercats does of a help deal. In the schematic you see it goes to the ABS signal. Also I attached the help file from Tunercats on how to make changes. Ive only seen the ABS light trigger unless its like 34.5 or larger and only when after correcting the tire size to get sift point correct to speedo mph.

 

still researching...