I checked my tach wire and I'm getting about 2.5 ac volts. So I have crank signal. Now again that's positive. I've tried learning the tach the way the install guide says and nothing. Now when I put it in auto it does something different. Last night it would just crank and not even pause just keep going unless I pressed the rs button a second time. This morn it would pause then try again. Again I tried to learn crank. I even set it up in the menu under tach when I changed it to auto and same when I went back manual.