2017 Humming Bird 17 FD Right tail light

[campRI]

We just brought a used 2017 Hummingbird.

Issue 1-
a. When connected to shore power, the right rear tail light turns on.
b. In my attempt to isolate the fault. - when I remove the 30 amp fuse from the DC distribution panel the rear right light turns off. The 30 Amp fuse is "charge line, slideout motor"

Any advice/wiring diagram would be much appreciated. Thanks in advance for the help on this forum.

 

[MichaelO]

Have you checked with Jayco about getting the wiring diagram?

 

[campRI]

Problem identified - intermittent short on the brown line on the 7 pin trailer pig tail. the pigtail is patched up with a lot of electric tape! It seems a tow vehicle has driven over it a few times. Confirmed problem by disconnecting and connecting the brown wires in the junction box located behind the battery. Next step is to replace the pigtail.

Was expecting a sealed junction box with a terminal block

Information I found useful when debugging this power distribution:

a. Location and function of AC breakers - picture attached.
b. Location and function of DC lines - Picture attached
c. https://wfcoelectronics.com/wp-content/uploads/2019/06/8700-Series-Manual-web.pdf The WFCO manual has a good debugging diagram on page 9.
d. 7 pin wiring harness diagram.

 

[MichaelO]

Glad to hear you figured it out.