loom is piss easy on a cossie mate, its all 1 part with a multi plug that has 4 wires on it
i can even tell ya where they go too,,,,,,, 1 is tacho, 1 is water temp, one is switched live the last one is main live
the loom is earthed via the plenum for some reason ( which i find strange tbh

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ive removed and fitted a cossie loom whilst my microwave meal was cooking