Brake Light Switch

[111Robin]

What are people using these days ?. Trying to avoid the poor quality "Lucas" rubbish from the usual places.

[LarryLebel]

If you mean mean hydraulic switches used with silicon brake fluid, Harley Davidson switches seem to last longer.

[111Robin]

Yes hydraulic, with DOT4.

[Herbert]

Does it make a difference if you use synthetic with a brake pressure switch ?

[111Robin]

No idea, I would doubt it.

[Andrew1967]

NOS or good used ones Robin

[Peter Laidler]

Silicon fluid made absolutely no difference to my old Lucas switch on my 69 S. Still going strong

[111Robin]

NOS or good used ones Robin

Good used would do Andrew, let me know what you have, thanks.

[Andrew1967]

I'll have a look and let you know Robin.

[floormanager]

Accel switches (for Harleys) are supposed to be good quality (not cheap)

https://www.ebay.co.uk/itm/272756949343 ... SwsCdhHmMH

https://www.amazon.co.uk/Accel-ACC-1811 ... B001OMKH7Y

[111Robin]

Thanks, I'll try a used one from Andrew, should be fine for now.

[Peter Laidler]

My friend who used to own a garage tells me if the inner diaphragm hasn't been punctured * then a good dose of air pressure can usually clear a stuck brake hydraulic switch. A rounded piece of plastic can also be used to carefull prod the diaphragm to activate the connection on the other sides. Flush out with brake fluid and try again.
* Usually punctured by the insertion of a screwdriver in an effort to 'clear-out' the blockage or obstruction.