2000 CBR929RR, 1993 VFR750F, 2000 Mille R
Check the brake bulbs themselves. Someone may have jammed a "similar" looking bulb in there, which may not have the right terminal configuration, resulting in both filaments shorting together and being in the full bright brake illumination all the time. Manual says 12V 21/5w bulbs x 2, which are also known as 7528 bulbs. Someone could have crammed an 1157 or something "close" in there, causing the problem. I see this happen in brake lights in cars I work on all the time, customer buy the wrong bulbs and jam them into the sockets. I've chased down bad wiring and switches before, even after changing the bulbs, only to find the customer had put the wrong bulbs in there in the first place. Only by consulting online manuals or the car owner's manual, was I able to figure out why the brakes weren't illuminating right.Checked the front sensor, it's not bound up. I moved the front brake lever off of it and the light stayed on. It rained so I wasn't able to disconnect the cable. One of my electrical friends said it could be grounding out. So those are the next 2 tests. Any other recommendations?