Re: How do I add a tach to my 75 Johnny 135?
Should not be too hard on your engine. The factory left a single grey wire loose inside the control box. This is the tach signal wire from the engine. You can pull that stub wire end out of a hole at the bottom of the control box. Each half of the box has half a hole-you will see the hole right along the split line between the two box halves. That wire can be extended to the S (signal) post on the tach. Now all you need is a pos and neg, from the dash and a wire for the light-if you want to run it at night. You will need a marine type tach, with the needle on the back set at "6".
