cowboywildbill
Active Member
Hi I am new to the site. I have a 2006 Heritage and bought a used 2 5/8" mini tach. As far as I can tell the same part # is used from 88 to present? I hooked the tach up. Yellow wire to signal at data port and red to +pos and black to ground. The tach reads at idle but jumps. Then when I rev it up it doesn't respond. Could it be the wrong year tach? or just bad? I under stand some of the older tachs hook up to the ignition coil, I wouldn't think that would work on a model with ECM. Any help would be appreciated.Thanks