by Vossman59 » Tue Apr 18, 2017 7:08 pm
So I have burned through many 3v battery's for my gauge. The last few that I swapped out only lasted one ride. The gauge is built by trail tech and on my other bike I have a trail tech gauge that connects directly to my bikes battery. However the gauge on my beta can only run off of the 3v watch battery. I wanted to connect the beta gauge to the battery however it would have to be 3v so I would have to step down the voltage from 12v. There is a cheap step down converter called a buck converter you can buy on Amazon $10 for a pack of 5. I soldered wires from the buck con. And connected them to the battery. The buck converter has a petentiomiter to adjust the output voltage. I adjusted the voltage with a screwdriver and voltmeter till the meter read 3v. I then covered the buck converter in hot glue to water proof the circuit board and then velcrowed the buck con to the battery. I then ran the wire coming from the output of the buck con along with the factory wires to the front of the bike. I removed the watch battery from the gauge and soldered leads to the battery contacts. Negative to the contact in the center and positive to the contact on the side. I drilled a hole in the battery cover and ran the wire out of the gauge through the hole. I used some cheap connectors to attach the wires from the battery and the wires from the gauge together and it works. The gauge now runs off of the bikes 12v battery I never have to replace a watch battery again. I will add some pictures when I figure out how