Brake lights always on

[65sprite]

I have not done the switch swap on a car that came from the factory with a pedal box mounted brake light switch. All my early LBCs came with hydraulic switches so the conversions I have done involved making a bracket to mount the switch. From memory the Lucas-type plastic switches I bought were threaded 1/2-20 and came without mounting nuts so I never used them. I was not interested in making a pair of 1/2-20 jam nuts to mount a switch I bought for less than $3 (yes you can pay more but BP Northwest sells them for less). I currently have a surplus industrial MicroSwitch on the Mini instead. Our Spitfire and GT6 both still use the factory switches.

Were I buying pedal switches now I would go to RockAuto and look for the brake pedal switch for an early 1970s 2002. You should be presented with two choices one which will be from Airtex. If the pictures are to be believed, the Airtex switch comes with two jam nuts while the other product does not show nuts. I assume the BMW switch must be metric. Regardless, to fit it to an early car will still require making an "L" bracket to attach to the pedal box and that bracket should only require a through-hole so the thread type would not be important.

If you were trying to adapt the BMW switch to a car that uses a tapped mounting hole for a factory pedal box mounted switch the thread type would matter of course. However, you could drill out the existing "nut" on the mounting bracket and use two jam nuts on the switch. I cannot even speculate regarding what would be appropriate for your car.


EDIT: I was wrong in my earlier post. It was not Paul Rego who found the BMW switch, it was "BobbyD", also from the Triumph part of this board. You can see his write-up of the switch in the link below.
https://tr6.danielsonfamily.org/AltBrakeSwitch.htm

Thanks Doug

 

[BigGreen]

On my Honda XL motorbike there is a pull switch at the brakepedal
Google on "switch and spring for foot activated rear brake(Spring)"

https://www.pocketbikeparts.com/Brake_Stop_Switch_Spring_Rear_p/sw302977.htm

Now find a place to instal ;-(

Hans