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Hydro E Lectric is a great resource for convertible parts.

I've downloaded a variety of Gates belts charts and they are not straightforward when it comes to deciphering part numbers. I may want to get a belt that is shorter or smaller in diameter than what I have now So, the belt I have now is labelled 11A1625. 7640 So, if I want the next...

Great work. I'm impressed.

Interesting. So nothing should be dropping much voltage, which means coils and series resistors should not be generating heat. Very resourceful of you to stack the voltages.

So a Zener has a 'knee' that once the current gets there it clamps the voltage. You can make a Zener by connecting the Collector to the Base of an NPN transistor, and depending on the transistor Beta a 'knee' will occur, etc. More info than you want to know. Try to power the circuit off of 5V...

Hard to say what is failing. You can take three D cells in series and have a current limited 4.5V supply. I've done this before when I need a quick and dirty voltage source to check gauges at flea markets, etc. I know GE clock radios from the 1980s used very similar display and timekeeping...

For the clock with segment issues did you try reflowing the solder connections to the display? I think if I were to tackle this I would just place my bench DC supply at 5V, current limit it to 100mA, and jump the voltage into the circuit at the zener through holes. See what happens. I'd also...

Here is a coil that might work: https://www.digikey.com/short/bmjvppfj Here is a Zener: https://www.digikey.com/short/f4qjjzh3 BUT, try the resistor substitute first and see if the circuit powers up (and Zener knee is hit).

Here is a coil that might work: https://www.digikey.com/short/bmjvppfj Here is a Zener: https://www.digikey.com/short/f4qjjzh3 BUT, try the resistor substitute first and see if the circuit powers up (and Zener knee is hit).

I probably need to give this some thought, but I would suspect a big coil. You are dropping 9V basically. Maybe 150 ohms DC resistance and 40mH? Maybe some pictures of the PCB and coil? Are you certain there is nothing else dropping voltage from the battery to the Zener? For troubleshooting...

The National Semiconductor DS7839 is a 5V TTL device. Are you sure you are dropping 13.8 to 5V via a choke coil? That is burning lots of current. Here is a link to the datasheets for the DS7839 device by National Semiconductor...

Watching the video again it seems the intention is to prove there's a corner case that each additive has a disadvantage. Very interesting that additives have no classification or standard to adhere to, or even evidence to back up claims. Still, the video doesn't clearly show the "snake oil"...

Maybe. He added the zddp to a plain base oil. The theory has been that it needs to be formulated, but just pouring the additive in and using a mixer showed the oil increase in zddp. Furthermore, the small additive amount ratio worked as expected with zddp levels.

I think he is showing that the Rislone is adding zinc and phosphorus as the product claims. Can't see all the parameters, but he didn't say the Rislone is impacting viscosity. I consider this good information. Looking at this objectively, nothing is too big of a surprise. Marvel mystery oil is...

Well......it looks like the Rislone does what it claims by adding zinc and phosphorus, but this guy says it's not good.

My advice is still the same; Grand Marquis.

Send a PM to @Slantsixdan . He sells turn signal switches from the original Chrysler supplier.

FOR SALE - New OE turn signal switches for '62-'63 & '64-'69

@Slantsixdan sells great reproduction switches at a reasonable price. I believe he had them made by a Chrysler supplier.

So what's the official favorite of the FBBO experts? Noco or Hulkman? I'm ready to make a purchase.