Ok,a few weeks ago i inquired about my tach not working.someone responded with a link as to how to test for bad rectifier,i tested it and bam,the tach worked so i bought a new rectifire and in stalled it today.Started the motor with new rectifier in place and tach still does not work.Any idea why it still is not working?will it hurt to change yellow wires around cause new ones are not marked with grey stripe like originals where,they are just solid yellow.