1961 Chevy C30 Stakebed Turn Signals

[SBPage1]

OK gang...need your sage wisdom. Turn signals weren’t working. Swapped out both front and rear harnesses (respectively) to front and rear taillights. The great news is that all the lights turn on...only challenge is the turn signals don’t work. Turn signal indicators don’t light up and nothing happens. Fuse is good and there is good power to all four lights. Just can’t get the blinkers to work. Brake light doesn’t work when I mash the brake pedal either.

Any advice? Options?

Many thanks