V100 brake light issues

[swiss1939]

I've got a v100 with turn signals whose brake lights only turn on when the turn signals are on and the brake pedal is depressed. Trying to sort out if it's a stator issue or a wiring issue like crusty harness in the frame that needs replacing.

The stator was rewired and repaired professionally, so i am leaning towards a short or something in the harness, but am wondering if anyone has seen this before and can suggest where to start or test?

I have removed the brake switch to confirm it is not a faulty brake switch.. so my brake light should currently always be on, but only turns on with the turn signals as mentioned. Also wondering which harness should be purchased if new is needed? Can't find a v100 specific harness listed, but i am thinking the v90 is the same?

wiring diagram included below.

photos.app.goo.gl/8uSQ14GVwMHTMxSA9
photos.app.goo.gl/Bjyg11Ko6AGC2ik2A

[swiss1939]

Finally solved this issue. Needed a hard to find nos lighting coil #157445.

members.modernvespa.net/swiss1939/uploads/img_20220423_140313_01_15091.jpg



All electrical works now after replacing wiring harness with new and rewiring the stator back to original with this coil.

Brake lights, headlights and turn signals all work.

[tzsteve]

So a simple fix then😀