Got a 2000 j130 vxsss and have a question about rectifier output. My tach seems to register low when below 1000 rpm. Registering 500RPM and sometimes less, in gear, sometimes zero. Tach is not bouncing around and seems to be correct in upper end as RPM at wot are same as they were before this popped up. Used a volt ohm meter to check wires coming out of regulator while idling on muffs. Red wire 12.9 volts , , Purple 13v, Yellow red 9.2v, yellow 5.0v and decreases to 2.5v at 2500 rpm, orange black from stator 5.5v, orange from stator 8v, grey at terminal strip 3.8v and does not change with RPM. Did not measure with a peak reading dvom, do I need one for these measuremants? I assess the charging system is working. I had read that the grey tach wire should read approximately 8V. Is that correct and do I need a peak reader to measure correctly? Trying to avoid throwing parts at tach problem and troubleshoot correctly. Any thoughts on rectifier based on measurements already taken...
