tandem axle brake wiring... series between front and back?

well, this is a reminder to check EVERYTHING.

yesterday.. I decided to clean-up the emergency brake cable/switch.
removed it and disconnected the wiring...

2 more wire nuts hiding under the propane tank mounts... connecting the main 12 gauge wire to the smaller wires going into emergency box.
and nothing was there to protect them from the weather.

so more cutting/soldering/heat shrink/taping. then painted switch body and frame area.