Speedometer calibration knob

[jsz]

One of my manuals called this a speedometer calibration knob but it didn't say how to use it. Do any of you know?

[jsz]

Here's a pic showing more of the gauges.

[spharis]

Don't know about that, but do you, or anyone else with the same, know what connections are on the back of that particular TAPS instrument? That's the last piece of my puzzle.

Also, your second ACC switch looks like one of the hinges on that Carling rocker switch is busted. You can get a replacement from mouser. The switch and the rocker are sperate parts on that model. It's from their Contura V sereis of panels. The one you need is part number 691-VVCMC $1.11

catalog page here
http://www.mouser.com/catalog/628/1346.PDF

The toggle will snap off the switch, and the new one will snap on. FYI you could replace all of them with a new style from that section (incandecent lamp) if you wanted.

[jsz]

spharis - No Idead on the TAPS. It works fine so i've never looked. Thanks for the rocker info.

Has anyone ever messed with the speedo knob?

[jsz]

None of you have ever messed with this knob???

[jsz]

Am I the only one with this knob???

[zad0030]

It looks like it could be a fader for the stereo.

[kko]

the knob is just what is says it is while running if you feal or know the speed is off (by using gps or compare to pp).you turn the knob to increase or decrease the reading on the speedo. i never like the knob up there because it can be turned by accident like while cleaning the boat and you always have to make sure it is right. wich in your case should be somewhat easy because you have pp. so i would set it to match pp that should be close enough but if you have a gps you could check it with that as well.

[jsz]

Thanks kko. That is a wierd design. Do you have the same on your boat?

[kko]

no my 03 does not have it. actually i dont recall seeing it on a tige but i mainly work on 05 and up. we do see an older one every so often i just dont rember seeing them. i see them alot on the centurion boats we work on. its not a bad thing to have. i just dont like it to be so out in the open but as long as you know to check its no big deal.

[whitlock87]

no my 03 does not have it. actually i dont recall seeing it on a tige but i mainly work on 05 and up. we do see an older one every so often i just dont rember seeing them. i see them alot on the centurion boats we work on. its not a bad thing to have. i just dont like it to be so out in the open but as long as you know to check its no big deal.

My 04 has it under the dash.
You need to almost lie on the floor to see it. After I set it, then I taped it in place.
It is nothing more then a potentiometer (verbal resister) to help set the feed back from the paddlewheel to the speed-o. (at least that how it works on my boat)

[dogbert]

I don't think that's the speedo calibration knob. If I had to guess, it's a gain knob for one of your amps (probably the sub).

That is not a standard knob as far as I know.

[Jason B]

No, that most definitely is a speed adjust knob. Mine are exactly the same. I turn that knob and I can do 50+mph

jsz,
twist on that while you're driving wide open and you will see drastic fluctuations if it's anything like mine.

[dogbert]

Hmmm, I've got 2 neighbor's with '02 21v Rider's Editions and neither one has that knob.

[Jason B]

He's in St Louis, don't see him trying to adjust that knob anytime soon

It's definitely warm enough to turn the radio on and see what happens though. You never know with used boats!