Installing a Volt Gauge

[alexmedic]

I have just been given a voltage gauge for my boat and I am stuck.

 

 

On the back of the gauge there are 4 terminals:

 

I - For the ignition

 

G - Ground (Obviously)

 

Light

 

S - ??

 

Does anyone know what the S is for??

 

Looking at my tach, there is an "S" as well, but I do not want to risk any damage, as the gauge works great with just the ignition, ground and light hooked up.

 

Any advise would be greatly appreciated!!

Edited July 6, 2010 by Ten90

[Rattletrap2]

I have just been given a voltage gauge for my boat and I am stuck.

 

 

On the back of the gauge there are 4 terminals:

 

I - For the ignition

 

G - Ground (Obviously)

 

Light

 

S - ??

 

Does anyone know what the S is for??

 

Looking at my tach, there is an "S" as well, but I do not want to risk any damage, as the gauge works great with just the ignition, ground and light hooked up.

 

Any advise would be greatly appreciated!!

 

I believe the backs of these gauges are generic and all have these terminals. S = "Sending Unit" or "Sense" lead. A strictly voltage gauge should not require a hook up for this terminal. A Tachometer or such gauge obviously would use this terminal.

 

Hope this helps. If you have the make and model number for the gauge, just google it! You just might find the literature sheet for it from the manufacturer.

[NANUK]

"S" terminal is not used on volt guage, they use the same housing for other guages so its easier for them to manufacture it with "S" terminal.

on other guages the "S" terminal would connect to sender.

on the volt guage there is a built in resister which feeds the voltage to "S" terminal from the ignition terminal, (if you check with a DC volt meter, you will get voltage readings between Ground & S terminal).

just leave it alone or put some elect tape or an insulated empty spade connector on it .

[alexmedic]

Thanks for the quick replies!

 

This forum is awesome!!