Lastly, the headlights. Then only question on behavior is whether the High/Low control is stalk forward or stalk center...Note that in "flash" mode, the power is sourced from F7, otherwise the headlight power comes from the key (and thru the 1st position toggle switch). The Carello relay (mounted near the steering column) acts as a bridge to enable both High and Low beams---this "rele per fari allo jodio, solo per il tipo Europa" (relay for iodine headlights) was probably only for 4 headlight cars (since the pointed down headlights and the custom of riding behind someone 15 feet behind their bumper is asking for trouble in the US...). 8ma1076 (2 headlight car) has the extra wires and screw holes on the steering column support for the 3rd Carello 22.900.000 relay, but no relay...).
The headlamp circuit is simple, but not ideal; Esp, the length of the circuit (wiring to the key, thru the switches and then back to the fuse box, before routing back to the front of the car) probably means a bit of voltage drop before the lamp...And the simplicity of using the ignition switch means that basically all electrical power needed to run the car is perpetually sourced thru that one little point... So a possibility for those concerned about wearing out their Marelli switch is to install a relay next to the fuse box, sourcing power from the F9/battery junction and using the wire from the High and Low beam indicator stalk as a control for relays (instead of actually pulling big current thru the switch). If you drive perpetually with your lights on, could be worth considering (and likely you would be able to put a couple micro-relays in the area, without needing to cut a single wire...) and not jeopardize the ignition circuit of the car--Lee
