Steve, thanks for that. Makes perfect sense to me. Aklthough the pattern relay has 6cyl printed on the side, it doesn't say 6zyl/6350 like the OEM item for an automatic I saw, which also had "Kickdown" written on it, which is why I didn't buy it. I will need to order the genuine item obviously.

Just out of interest, would it be a problem using a relay for the automatic in a manual?

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1987 300e manual 250,000 km (sold)