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Hour Meters Do Not Work

M

Misterrobot

Member
Hi all!

I have finished searching the web and can not find wiring diagrams for the hour meters on my 1980 Gibson houseboat. Both meters don’t work. I patched up a lot of wiring issues when I bought the boat this spring. I could have caused them to stop working but I don’t see how I could have don’t it. Don’t worry, when you’re my age you admit when you might have fried something!!!

I don’t know if they ever worked but I suspect that they did…. now they don’t.

They are original 1980 Teleflex hour meters with 1/100 read outs. There are three connection posts, two of those are + and – for the illumination lamp. The last post runs to the tach wire – the same tach wire that goes to the tachometer (working) and the sync thingy (doesn’t work). The tach wire operating method is new to me. My research says these might be “pulse sensing” hour meters and not just 12vdc activated.

Sooooo….. what powers this hour meter? Is there a battery in there? Is the tach wire sufficient to power the meter?

I hooked the meters straight to 12vdc with no luck.

I don’t get it. Can you help?

Capt Ron
1980 42 foot Gibson Standard Houboat
270 CH Crusaders
 
i doubt your hourmeters are pulse sensing....they have no idea how to correlate rpm with time. Should be a +12V connection - usually to the key switch I terminal to make them run, a ground, and some have a 12V light connection, too.
 
I doubt a 1980 vintage would have a pulse driven unit. Typically they start working as soon as the key hits the "run" position even if you haven't actually cranked the engine over....not considered actual engine run time.
 
I replaced my 1980 types with simple Faria Chesepeke series. Basically like a clock, give it 12v and it runs, kill the voltage and it stops. Accumulated on time = run hours
 
Thanks for replies!!!

I took the meter out and a sticker fell off of it. On the sticker is the wiring diagram on the bottom of the meter, I could not see it from up top. These are typical meters from the 80's. All they need to work is GND and +12vdc.

The PO hooked up to the tach wire from the engine and fried both meters. SHEESH

Thanks again!!!

Capt Ron
 
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