Hi all from " electrically challenged!

Need to replace light switch ( 63 GMC 4x4 burb ) I haven't done this before. I have the replacement part, how do I go about it please.

On my burb the directional signal light on the dash is on the right of the steering wheel and lights up and blinks when indicator is engaged for either right or left turns. Yesterday it stopped blinking for right turns even though the taillight blinks.However it still blinks for the left turns. I thought it was the modulal in the fuse box and replaced it but that's not it. Any ideas?

Last issue....right tail light lights up for breaks and turn signals but not for running lights...what's up with that? Replacing the bulb doesn't fix the issue.
I BTW, I just replaced the foot switch for the high beams and the ignition switch (with a little help from a friend re removing and replaceing the key cylinder from the old to the new switch)

I can see how with a little study and practice auto electrical could actually be cool!

Thanks for any help!

eb's 63


1963 GMC Suburban
Kodak Slide Show