I have a 2007 Highlander with a new Z2 which works great, I would really like to connect the Pink VSS wire but it seem pin 17 yellow does not give the proper signal any answer on this issue. It reads 45mph and can not calibrate, perhaps I should connect and drive for a while, if any one can give me the straight scoop it would be great. Thanks

Speed Sense yellow ac ECM, 2nd plug down, pin 8 or 17

The ECM (Engine Control Module) is behind the glove box, it is the module to the left

if youve alreat been driving without it you need to go into hardware info and reset learning status

Thanks for the info it is pin #8 second connector from the top. That works in my 2007 V6 Highlander w/o JBL audio.