NOTE " If you hook the gauge directly to 12V power you can let the magic smoke out of it FAST"
If you measure the voltage YES you you see it toggle from 0 to 12V. its spose to "The gauge uses a 5 volt pulse supplied by the instrument cluster's voltage regulator".
Its a switch to get an average of 5V it toggles from 0 to 12V if it were on for a second and off for a second the average would be 5 to 6V that is the 5V supply the gauge uses..
If you want to go deeper start a post on your issue... I hope those that don't understand how a Ford system with a voltage stabilizer works set back and be quite... Its somewhat of a different animal...
Google how does the voltage regulator work on a ford fuel gauge
Yes it took me awhile to get a grip on it I took the cluster out and wired it to a sender on my work table using a voltmeter it threw me a curve ball :(... I them hooked a DSO on it and saw the light :) The DSO scope showed me voltage over time not an average jumping around you will see with a DVOM... IF no DSO use a analog volt/ohm meter then you can see the needle swing back and forth...
If the voltage stabilizer is switching its working one thing to remember the base of the VR MUST BE GROUNDED It may be best to run a dedicated ground to it :wink: :wink:
I call those old ford car/truck dashes Gillette dashes they are all metal and have hidden razor blades you are gonna bleed if you would on them much...
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