1982 KZ1000J2 SPEEDOMETER ISSUES

Hey fellow riders and wrenchers, I finally got to test drive the bike after 20 years of rebuilding. The speedometer did not work but all the lights work in the gauge.I checked all of the connections and they looked clean. I removed the speedometer from the case and all of those connections are clean.It shows a 10 amp fuse in there but I assumed if the lights are working the fuse is good ??? I read the troubleshooting portion of the manual and it states to make sure there is battery power to the 3 pin connector inside the headlight. I looked at the wiring diagram and it shows the wiring dead ending at the speed sensor.Can someone tell me which wire in the 3 pin connector is the power from the battery ? I'm waiting for a couple of test pins to do more wiring checks. I really need some assistance here and any will be greatly appreciated. Thanks in advance, stay safe and be well. Jon

I think the brown wire is the power line from the battery.