Several models of evinrude outboards suggest an engine tune up every 500 hours however many boat manufacturers dont include an engine hour meter in the instrument gauge package on the boats they produce if this is the case with your boat adding an hour meter will ensure that you are able to maintain your boats power plant on schedule. How to install an hour meter by connect these leads to the portion of the wiring system thats energized whenever the ignition key is turned on in your boat most commonly people connect the leads coming out of the hour meter to the electric fuel pump which is designed to supply enough fuel to the injector pump . Diagram d proper wiring of the vdo quartz clock diagram e wiring examples of the vdo engine hour meter wiring the quartz clock diagram d 1 run wires from the quartz clock location through the firewall to a the positive terminal on the battery after the fuse box but before the ignition switch or any other switch. Re how to wire up an hour meter you are out of luck an hour meter is a clock that requires switdched 12 volts and ground so it will run as long as the key is on engine running or not but the question is why do you leave the key on you cannot hook it to the coil because that is a pulsed signal. A signal identifying your particular meter is sent down the line from the electric meter to the utility company electric meters read power usage in kilowatt hours in simple terms 1 kilowatt hour 1000 watt hours the meter reads the entire power usage in watts of all appliances light fixtures and plug in appliances within the home
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