Relays (what is this?)

[Redline]

Tracing the wires on my BC Coupe (Euro market), I've identified from left to right:

Interval wiper (black box)
Cooling fan relay (grey-silver box)
Underhood light (gold)
?? (odd black box set off from chassis, under throttle cable)
Alternator charge indicator (gold)
Headlight relay (silver)

So, what is that odd black box? Voltage regulator?

Also, did all quad-light 124s have a headlight relay, or is this Euro only? If I were to use relays for all the headlights, should I ditch the original relay and use separate, new relays for the high and low beam circuits?

[coise]

What year is your car ? It looks like a voltage regulator. To be confirmed.

[Redline]

71

[coise]

That would confirm that your alternator doesn´t have an integrated voltage regulator. I would say almost 100% that it is it. A better picture of it would help.

[RoyBatty]

Yup, Voltage Regulator.

[Redline]

Thanks!