FT500 to FT550 plug and play adapter harness is the fastest way of using a FT550 on an existing FT500 installation.
The adapter is 16 inches long and has 2 FT500 connectors (24 and 16 ways), 2 FT550 connectors (2x 26 ways), 2 CAN connectors and 1 connector for strain gauge shifter (4 ways).
Optional (10) FT550 terminals allow you wire additional inputs/outputs that are available on the FT550 compared to the FT500.