Ok, here it is on the forum for all the world to see. I bought a battery to start my kit fox 1200 with a rotax 912. The terminals were backward to the one I pulled out and I didn't notice the orientation difference. At first start the starter ran backwards! Just the starter, not the prop. I didn't make a second attempt. I was in shock. I investigated, corrected it, started the engine and the VOLTMETER reads zero. the fuses to the voltmeter and the voltage regulator are visually fine. But I suspect I fried the voltage regulator. Can I test it? How? I have a fluke meter but never have learned the finer points of electrical troubleshooting. the learning curve is high today.