Four Wheel Drive Upgrade Actuator Adaptor Harness. Allows the use of upgrade actuator  ssd-600101 in 1997 K-3500 series trucks originally equipped with the standard thermal actuator ssd-019 from the factory. The OE thermal linear actuator became a common nuisance item to replace. The upgrade actuator available as p/n ssd-600101 is more reliable in cold weather. It is not a direct replacement, it requires this harness adapter kit ssd-600600 to install. This harness is mostly plug-in, except for one wire that must be spliced in. Directions and schematics are provided. Only very basic electrical knowledge is required. Worst case an hour to install (blindfolded)

Contains...

1) Harness with time delay relay

1) Actuator spacer

1) Instruction