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Thread: Black/yellow trace wire down by pressure sensor

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    Default Black/yellow trace wire down by pressure sensor

    Car was originally a 1.2 8v mk1, I have a black with a yellow trace wire located down by the pressure switch. Was going to use this for pressure gauge, but it seems this wire goes into the relay with a yellow base in the fuse box. Does anyone have an idea as I'm sure I used this wire on an old conversion many moons ago. Thanks

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    Blue/yellow will be for a oil sender. Blue/green is for the oil pressure switch

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    That's what I thought but when I traced the black/yellow wire it goes into a relay in the fuse box with a yellow base

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    I think the black/yellow is for the auto choke on the 1.3. Not 100%. It’s normally taped up on other models.

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    It was originally a mk1 1.2, would the auto choke be connected to a relay?

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    Looking at Haynes wiring diagram it shows it going into a relay, connected to the choke warning light too. This tells me it’s for the auto choke. I fitted a 1.3 with peirburg carb a few years ago and found this wire taped up in my H reg MK2 nova 1.2 carb. Was just plug and play.

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    Top man I can't seem to find my Haynes

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    Seems mad how vauxhall would put a whole wiring circuit in with a relay and holder across the whole range.

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