This B&M converter lock-up control provides dash mounted control to govern converter lock-up at any speed between 30 and 90 mph. An LED display tells whether the converter is locked or unlocked. This kit eliminates converter lock and unlock cycling and premature unwanted converter lock-up avoiding engine lugging and spark knock. It also provides lock-up at highway speeds for fuel economy. This kit is perfect for converter lock-up operation when converting a non-lock-up equipped vehicle to a lock-up style transmission and converter.