hey i tried this the other day and it didnt work!
there is 3 wires from the gbox sensor, 1 is black which i assume is the ground
one has yellow and black iirc and the other has blue and white?
i put the yellow and gray wires on the yellow and black wire and connected the red to the blue and white!
i checked all connections were secure but speedo stopped workin and entered limp mode!
taken the convertor off atm and speedo is workin again aint not in limp mode!
any ideas?