I was doing a blast when my crusie control stuck and held the car at 5500rpm. Then the speedo kept moving and now with the car off and key on it sits at 160mph. Is there a way to test the connector in such a way were if I ground one wire the speedo will read 0 again? Most of the time an unpluged sensor will read 160 and a grounded sensor will read 0. I just want to varify that the wire didnt burn somewhere and become an open loop.