[Vwdiesel] no turn signals 81 pickup

[Will Taygan]

Looked at an 81 pickup today, wipers work, hazards work, turn signals
just glow green.  I swapped out a bunch of relays and tested fuses, but
didn't find the culprit.  Next step is to clean up the grounds.  I feel
like I've been here before , but can't remember what I did last time.
Maybe the bulbs?!?!  Is there anything else easy I could check?

Will.