Loose wire with plug on the end

[freebird]

Ok I'm almost finished rebuilding my motor and last night spent over an hour getting the bolt on the back of the head in with the plate and the earth wire for the coils. My question is, what is the other wire for? which bolt on to the same place, it's short with a plug on the end but does not seem to go anywhere, my guess is that it is to plug in a sensor but it go's straight to earth???

 

[DeanS15]

normally on jap cars there is a plug connected straight to earth. i believe it is for the manufacturers diagnostic equipment :nod:

 

[freebird]

Cheers

Thanks Dean thats what I thought

:thumbs: