[jpfieber]

I just bought a used '89 Mercury 25HP 2-stroke electric start. It has the remote controller, a Quicksilver, and I noticed on the cable coming out of the controller was an extra connector (4-pin). Looking around the web, it appears this is for plugging in a Tach cable. Since these controller cables are probably interchangeable on different years and models, I imagine that just because the connector is there, it doesn't necessarily mean it works with every model. Does anyone know if my model motor works with a tach? I hate to buy the cable and tach only to find it isn't supported.

P.S. First post, great forum! I've already purchased two orders from the store, great selection and prices!

[Laddies]

As long as the engine is equiped with a charging system is should plug in heres a link on how it works http://ww2.tflx.com/obtachtrad.html

[jpfieber]

How do I determine if it's equipped with a charging system?

[Laddies]

There will be 2 yellow wires from the stator that is under the flywheel that goto a small box with three terminals 1 red, 2 yellow and a gray wire that is the rectifier and then the tach leads at the box will work.