WELL IM INSTALLING A NEW AUTO METER WATER TEMP GAUGE AND I NEED A LITTLE HELP GUY'S PLEASE????? IVE CONECTED THE SENDING UNIT NOW I JUST DONT NO WERE CAN I RUN THE GROUND CABLE FROM AND IT SAYS THERE THAT I HAVE TO RUN I GUESS IS THE POWER WIRE FROM THE IGNITION WIRE HOW DO I DO THAT AND HOW CAN I GET TO IT ALSO WHICH ONE IS IT WHAT COLOR IS IT. ANY ADVISE WILL BE TAKEN THANX