rear brake relay

[klausman]

Hello Everyone, I was wondering if any one knew of a replacement for the rear brake relay. I keep having trouble every time I hit the rear brake the brake light is not going on. Any help would be much appreciated thanks.

[DAVID THOMPSON]

which mz model
as i do not remember a relay in the brake circuit
just 2 switches and the rear one is bad about going out on the rt125
its a banjo bolt in the rear hydraulic Master Cylinder unit
the front one is a bmw part number i have had them both go out
check the bulb its a dual filament 1157 ??i think
the 660 bikes are hard on bulbs
dave

sometimes things get lost in translation
relay in english is a remote controlled switch
a switch is operated by your fingers where it is located or in this case by the brake levers front or rear

[klausman]

Hi Dave, Thanks for your reply. Yes you are so right, things can get lost in translation. What I am referring to is the "switch" that's bolted on top of the master cylinder with the two electrical connections on top of it. The bike is a 2005 Baggy. The front brake when pressed, lights up the taillight but the back doesn't. I'm in the US, so sometimes trying to acquire specific parts for this bike is challenging and time consuming. I was recently getting the bike NY state inspected for the Year and I was denied due to this issue and only have a few days left on my current inspection before I will have to stop riding until the problem is repaired.

Thanks again for all your help

[jaywillie2601]

Look on EBAY with a search of 'motorcycle rear brake switch' and u will find several. Since u want to use a hydraulic switch...u would need to determine the correct thread for your brake cylinder. Or use one of the mechanical switches in the interim.

Good luck.

[DAVID THOMPSON]

bmw number for front
or aprilia number for rear
dave
the front one is a bmw part
61 31 1 244 070

This FRONT part fits models listed for year 1981 maybe others
R80, R80ST, R65, R80RT, R80GS, R100/7, R100CS, R100RS, R100RT, R65LS

also fits 2002 mz rt125cc and 1995 saxon tour and harley davidson sprint from early 1970's

looking at my notes from past work on my bike
aprilia number on parts bag is 8124479
this is for rear of rt125
search word brakeswitch

KTM NUMBERS maybe
Front: KT51011050000
Rear: KT50311051144