I’m at work, so no Bentley close at hand.
‘84 with ‘85 Wolfsburg cluster.

Symptoms:

Headlight switch on, ignition on. 
No headlights hi/low
Hi indicator is lit.
Instrument lights/side marker lights are lit.
Holding the hi/low switch back makes no difference. No lights.

This started yesterday AM. Cycled headlight switch yesterday and it resolved itself. Headlights off and on half a dozen times through the day with no further problems. This morning? Nothing.

Last work: install GoWesty instrument foil replacement kit.

I’ve done no troubleshooting so far. (Other that cycle headlight, dimmer and ignition switches a few times.)

Thoughts?

TIA,

Jim