johnson volt meter

[Johnson110]

Hi, I put a new battery in the boat marine deep cycle, My volt meter on dash on boat reads as high at 16 volts, but I check the battery with my digital meter and I am getting 13. 65 volts, this tells me that the volt gauge in not accurate, question : is there a way to test the volt gauge? or do you simply replace it? Thanks for any replys!!

 

[ezeke]

Re: johnson volt meter

The meter on the dash is reading the voltage from the running engine. Are you taking the battery reading at the same RPM?

 

[Johnson110]

Re: johnson volt meter

Yes, When I testing the volts with my digital meter, the rpm was the same this is why I think that the analog volt gauge on boat is not acurate!

 

[Johnson110]

Re: johnson volt meter

I did this switch on check volts at indash meter with my digital meter and get 12.69 volts, the indash volt meter reads over 14 volts! Can anyone please tell me if my indash volt meter is bad, I am not too savy when it comes to wiring. Thanks for any replys!!

 

[hoeser]

Re: johnson volt meter

Read the voltage *from the terminals on the back of the in dash meter*, with an external meter. If they read differently at the exact same time from the exact same spot.. you have a bad gauge in the dash.

 

[Johnson110]

Re: johnson volt meter

Thank you I get a diffrent reading fron the back of my voltage gauge with my digital meter, so I am thinking the in dash volt gauge is bad!