tach, temp, and gas gauges not working

I

inboardnewbie

Seaman
Joined
May 16, 2011
Messages
65
Hey fellas i have a 75 searay srv190 with a merc 888 the gas gauge doesnt work nor does the tach or temp gauge i need to fix these probably just bad gauges except for.maybe gas gauge i just need some help figuring out which wires go to what, does the tach and temp gauge come from the coil? Any help.or possibly a diagram would be greatly appreciated thanks in advance guys
 
F

Fed up

Petty Officer 2nd Class
Joined
Apr 30, 2010
Messages
189
Re: tach, temp, and gas gauges not working

If none of the guages work i would start by looking at their common power source.
 
I

inboardnewbie

Seaman
Joined
May 16, 2011
Messages
65
Re: tach, temp, and gas gauges not working

The speedometer and the vacuum gauge works btw what is the vacuum gauge anyways? I have a button and it says push to reset all circuits idk im overwhelmed with it
 
F

Fed up

Petty Officer 2nd Class
Joined
Apr 30, 2010
Messages
189
Re: tach, temp, and gas gauges not working

the speedometer and vacuum gauges are not powered by electrical, the others are.
 
J

jhebert

Ensign
Joined
Jul 24, 2005
Messages
903
Re: tach, temp, and gas gauges not working

inboardnewbie said:
The speedometer and the vacuum gauge [work]....
Click to expand...

The speedometer and vacuum gauge are very likely not electrically operated gauges. That is why they still work on your boat--they do not need power. You were offered good advice to check the power source. Your reply is that gauges that do not use power continue to work. Your reply does not provide any proof that the other gauges are getting the electrical power they need to operate. I recommend you follow the advice you were given--check the electrical power distribution to the gauges.
 
I

inboardnewbie

Seaman
Joined
May 16, 2011
Messages
65
Re: tach, temp, and gas gauges not working

The speedometer and the vacuum gauge works btw what is the vacuum gauge anyways? I have a button and it says push to reset all circuits idk im overwhelmed with it
 
I

inboardnewbie

Seaman
Joined
May 16, 2011
Messages
65
Re: tach, temp, and gas gauges not working

Ok i understand that but where would i look for the power source? My battery all my wires are hooked up and my toggles work fine so if thats what you are referring too then everything seems fine ive checked and double checked and all wires are hooked up does the tach wire to the coil? See i have no idea im.learning tho and sorry about the post so many times idk what happened there
 
Silvertip

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: tach, temp, and gas gauges not working

PLEASE do not use texting shortcuts. Use real English words so we don't waste time. There is a sticky at the very top of this forum titled "Generic Boat Wiring Diagram". That diagram covers the vast majority of small boat instrument panels.
 
J

jhebert

Ensign
Joined
Jul 24, 2005
Messages
903
Re: tach, temp, and gas gauges not working

inboardnewbie said:
... idk means i dont know
Click to expand...

I am fairly familiar with small boat electrical systems and I have never seen "idk" used before. Usually when one makes an acronym the acronym uses capital letters. For example, we often talk about RPM for revolutions per minute, or HP for horsepower. But I have never heard of "idk" used in any sort of discussion about small boat electrical systems.

I think SILVERTIP has given good advice--Don't make up your own acronyms that no one has ever heard of before and expect readers to know that they mean. We have spend a lot more time discussing what "idk" is supposed to mean than it would have taken to just type "I don't know."
 
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