Hello everyone new to iboats have found quite a few questions answered in searches, just bought a boat with a 90 3 cly. Mercury ser.# 0C293555 and the tach has not worked reading thru FAQ small rectifier test my rectifier has 2reds,2yellows and one gray, Joe's test only indicated 1 red,2 yellows, 1 gray I assume the test would be the same correct, I get no readings either way, rectifier must be bad correct? Also would appreciate anyone that has a manual for my engine. Chuck
