THE GAUGE WORKS BUT IS FROM A OLDER VERSION HD KIT ( PART NUMBER UNKNOWN )AND IT RETAINS MOISTURE , GETS FOGGY AND IS SLIGHTLY FADED SO I REPLACED IT WITH THE GAUGE FROM PART # 70900283 WHICH IS A SEALED UNIT . THE SENDER UNIT IS NEW AND WILL FIT YOUR OIL PAN AND THE SENDER WIRE HARNESS IS  NEW BUT DOES NOT FIT THE OLD GAUGE WITHOUT CUTTING THE CONNECTOR END OFF THE NEW HARNESS AND INSTALLING FORK CONNECTORS IN ITS PLACE . I WAS ABLE TO USE OLD SENDER AND HARNESS TO INSTALL NEW GAUGE , ( I I CAN' T TELL YOU HOW AND DIRECTIONS DON'T SHOW YOU  )  . MOST LIKELY THE YELLOW WIRE GOES ON THE SIGNAL POST , THE BLACK WIRE GOES ON THE GROUND POST AND YOU REUSE THE ORIGINAL WIRE FROM AIR TEMP GAUGE TO THE POSITIVE POST BUT I AM NOT SURE . THAT IS WHY THIS KIT IS FOR PARTS ONLY . HARNESS & SENDING UNIT ARE FROM HD PART # 70900283 AND OIL TEMP GAUGE IS FROM AN UNKNOWN HD PARTS KIT . THIS PART FIT 99 - 13 FLHT FLHTC FLHTCU FLHX FLTR  & TRIKE , DOES NOT FIT 09 & LATER CVO MODELS . SORRY,  NO RETURNS OR WARRANTY ON THESE PARTS .