Help I have got one of the lucas hydraulic brake switches that came with my part built kit but can't fathom out the thread on it - I have tried metric 10x1 - no good and also 3/8" UNF - also no good. Anyone else know what it could be???

1/4" NPT, although I might be wrong.

linky thingy

Chris, it looks like you have a 1/8"NPT thread. Lucas do metric, unf and npt.

I don't know how to do a linky thingy but details here: http://www.autoelectricsupplies.co.uk/product/182

John

Thanks guys for that, just my luck to get the old ball one!!

Ta