Volt meter wiring?

[tjello327]

Hello forum,
I have a 1986 125hp Force that I am going through the dash wiring on. I got the overheat alarm working and am now having trouble with the volt meter. Mine has a ground post, a "P" post (positive 12V I assume) and a "S" post (I assume send or signal?) Post "P" I am hooking up to a keyed 12V sorce, the ground goes to a good ground, my question is were does the "S" wire go to?

Thanks,
Tom

 

[GrindKore]

Re: Volt meter wiring?

Hello forum,
I have a 1986 125hp Force that I am going through the dash wiring on. I got the overheat alarm working and am now having trouble with the volt meter. Mine has a ground post, a "P" post (positive 12V I assume) and a "S" post (I assume send or signal?) Post "P" I am hooking up to a keyed 12V sorce, the ground goes to a good ground, my question is were does the "S" wire go to?

Thanks,
Tom

Typically voltmeter gage has usually three contacts. One for ground, second for positive typically wire from ignition harness, and a third for light bulb inside for night operation. I'm not sure what the designations on your mean, mine has - ground and + polarity labeled on the backside.

Since you do not want the volmeter to be always on, make sure your positive contact comes from ignition wire. In other words it only should turn on when you have the ignition key in "on" position.

 

[tjello327]

Re: Volt meter wiring?

Thats what I figured too. I just dont know what to do with the post marked "S". Dont make much sense. It is just like a tach, ground, positive & singnal. Not sure about why I need to hook anything up to the "S" post.

Thanks

 

[Silvertip]

Re: Volt meter wiring?

You don't use the "S" terminal. Gauges are manufactured using the same rear housing and meter movement. Only the gauge face calibrations change so there is no need in spending extra money for a separate mold to make a housing without a "S" terminal. All you need is the light, ground, and "I" or power connection.

 

[Big Keepers]

Re: Volt meter wiring?

So to test a voltage gauge all one needs to do is hook it up to a battery and look for movement of the needle?