VW beetle 68 and up Fuel Gauge Regulator "vibrator" modification for after market 32 ohm fuel gauges

Update 3/10/2022
I do not recommend doing this mod. Read on. Thanks for looking.
I will be re-doing this video soon. 8/1/20.. While this will work good I have found that the internal resistor is a bit low and could be changed to 33 ohms. It is more work but I feel the change reduces the heat generated by the circuit. One could eliminate the package and put the diode and resistor external on the gauge with 1/4" male and female terminals on to attach to existing wiring and gauge. Use some protection to avoid shorting out.
Changing the Zener 5.1 volt 5 watt Zener diode to 7.5 volt 5 watt to compensate for the increased resistance of the non OEM gauges. OEM gauges are 18 ohm. After Market are 34 ohms.
When replacing the Zener calibration of the 34 ohm gauge will be needed otherwise the needle will peg. See the calibration videos.
After more work trying to get this design/modification to work I am recommending that this is not a good workable design.
See my videos about the buck regulators.

[@michalgola1347]

If you've changed your fuel gauge voltage regulator and It is reading half a tank when filled up this video is for you. You will learn how to modify your amazon voltage regulator (originally it used to be a vibrator there) . You also got after market 34 ohms fuel gauge when system was designed for original that was half of the resistance, twice lower -18 ohms. Here you got the solution. Great Video Sir. Thank you for sharing!

[@vwbeetlefuelgaugesystem]

Hope you have soldering skills. If you watch the Buck regulator videos You will see that the ideal voltage for the 30+ohms gauge is 6.4 vdc. There are no Zener diodes avail for that voltage. Jim.

[@roadk02]

This worked for me thanks

[@SladesVWBeetle]

Very good video!!!

[@kennethwoodby4528]

that is incorrect. he states that if you get a new after market 34 ohm fuel guage you must modify the vibrator

[@vwbeetlefuelgaugesystem]

How then will you get enough current to make the gauge go to full? If you watch my other videos using the buck regulators you will see what the issue is. The difference in the resistance of the OEM gauge and the After market gauges is about 50%... Thus an increase of the output of the Vibrator/regulator. You did not read my comments for this video! Thanks for the reply.