JD and Beastlet:
Back of truck socket
JD and Beastlet:
4- and 3-wire harnesses
JD and Beastlet:
Truck socket closed
JD and Beastlet:
Truck socket open
JD and Beastlet:
Extension plug
JD and Beastlet:
Extension socket
JD and Beastlet:
Trailer plug
JD and Beastlet:
DeoxIT D5 - contact cleaner and protector
JD and Beastlet:
After cleaning the contacts
JD and Beastlet:
Multi tester
JD and Beastlet:
Problem solved - selfie with Dad
JD and Beastlet:
The problem is with the extension
JD and Beastlet:
Plug end rust
JD and Beastlet:
Corrosion in the plug
JD and Beastlet:
Plug clean
JD and Beastlet:
Cleaning the screws
JD and Beastlet:
Socket end corrosion
JD and Beastlet:
Cleaning up the terminals - front
JD and Beastlet:
Handy wiring diagram
JD and Beastlet:
Cleaning up the terminals - back
JD and Beastlet:
Tested and ready
JD and Beastlet:
Extension in - running lights good
JD and Beastlet:
RH signal good