64 econoline ELECTRICAL HELP

hey all, just picked up a 64 econoline van! i'm stoked, but i'm having trouble with the running/brake lights.

(already replaced the stoplight switch underneath, but...)

STUPID QUESTION: how do i disassemble the fuse box/headlight switch???

i pulled off the dash plate and i can feel a spring-loaded peg on the left side, but it doesn't seem to release anything. i feel like an idiot here, but i've been fiddling all over with this thing and i can't seem to get the thing unhinged. it may just be rusted on there, but how is that switch connected?

i really appreciate any help with the thing, or general tips when it comes to this electrical setup.. (the pile of 47-yr-old wires is daunting...)

THANK YOU!!!

ps- the lights have worked intermittently, so i know it's not a fuse and the wiring must be intact..

not sure how to get the switch apart but with intermitant lighting problems I always search for good ground path first, you know power can get to the bulb

1. Remove the control knob and shaft by pressing the knob release buttun on the switch housing, with the knob in the full ON poosition. Pull the knob out of the switch. 2. Unscrew the mounting nut and remove the switch. Remove the mounting clip and the fuse panel from the switch. -this from the manual.

awesome, thanks so much for the responses!

i checked the grounds and they seem good, so i'll try the wd40, as i've almost bored a hole into my thumb..
figured it must be that simple.

i'll get some pictures up of the work in progress