Designed to adapt a standard SAE 7-pin plug (used in Semi Truck/Trailer connection cables) to the SAE 6-pole sockets usually found on the front of older semi-trailers.
SAE 7-Pin plug - same configuration as all SAE 7-Pin sockets
Other end has an SAE 6-pole plug - fits in tow vehicle socket or older semi-trailers
The marker and tail lights will be both powers per SAE 6 protocol
Constructed of die cast metal for impact resistance
Solid brass pins/sockets