Thanks for the information. The relay, above the driver's foot, was loose.

Check ground wire screwed to on steering column, just forward of the turn signal/hi beam/lo beam switch. Our '86 240 had brights only, due to ground wire screw came detached at that location. This ground also served the horn. If you're a pacifist who never angers, you may never know that your horn is not working!.

BTW, on our '86 the Headlight Relay is located low on the drivers's side firewall (interior). You might not need to look under the floor hump.

I doubt it's the switch. Since the Headlight relay was introduced in '86, the switch carries much less current and lasts much longer.

My bet is the HL relay, which on the '86 is sort of buried under the "hump" on the left side of the driver's floor. With luck, you migh be able to just fish it up and out by the wires.

It's the only relay down there with a Red/Green wire. I think your wiper delay relay is in the same (sometimes damp) place.

Volvo # 1324749
Bosch # 0-332-015-006
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Bruce Young
'93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.

my bet would be the rotary headlight switch... sounds like the stalk is working fine, as is the relay if it works when you flash 'em.
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-Matt '70 145s, '65 1800s, '66 122s wagon, others inc. '53 XK120 FHC