Hi Guys,
It has been years since I have posted but I have started back up on my project and you guys always have given me the right answers in the past

I have my grandpa's 1960 F350 that I have been working on and I have not been able to get the brake lights or the turn signals to work consistently.
I replaced the switch on the brake master cylinder but have had no luck, no blown fuses either. Is it something to do with the signal switch? The lights pretty much never come on and if they do they are extremely dim.

Thanks!!