hello betyargabor, i have the same interface and i removed the R04 resistor and it works good!!

Hi guys, I have a bluetooth Elm interface and i removed the R04 resistor and it works pretty fine but first of all i would ask you how can i modify the pin's connection to get an Elm19 interface because i dont want spend other money!! I prefer make it myself! Really really thanks for help me! P.s. I...