The relays are built into the multifunction switch
The wiring harness and connectors going into the switch are known to melt and cause issues with connections
These should be inspected closely
If you have a tilt steering column the. You really need to pay close attention to all the wiring in there going to headlights
The wiring diagram posted above shows the entire headlight system in a 94
I’ve been driving an 88 for 25+ years and I have redone the headlight system a few times
All of the wiring between lights and switches has been replaced, the connectors at the multifunction switch have been replaced twice
I used to run some h4 glass headlights with powerful bulbs I think this is what melted things but I have seen it on quite a few of these trucks with age. Now I have led headlights and way less issues with heat