Also its common that they came with a fresh air vent that open behind the hood? it does have a pull cable knob.That vent started with the 66 model and worked until the end of the 73 model. Then for a few years after that it was just welded close since the heater starting in 74 had a vent for fresh air on the top. I'm sure it was still a vent later in market where a heater wasn't standard like the US.
That would make sense that the red knob under the dash worked a add-on hazard flasher. Starting with the 68 model the hazard flashers were required in the US. That red knob switch look like what came in my 68.
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