Magnetec converter part

Photo 2 shows value as .3 ohms

That is a high wattage resistor. It is about 2 to 2.5 inches long so I will guess in the 25 to 50 watt range. The value/part number is probably on the back side or bottom. You'll have to drill out the rivet to verify.

That resistor is probably $10 to $15 dollars.

Now for the opinion....

I can't speak for newer Magnetek converters, but I have worked on several old Magnetek converters, 2004 and older, and I would not fix it. The output was not filtered and controlled like todays converters.

I suggest replacing with a modern Progressive Dynamics multi-stage or another brand of equivalent output. They are microprocessor controlled and have multi-stage charging which is much better on the battery.

Look on line, I picked up one about 2 years ago for $60. Currently I'm seeing 100 - 150 on ebay.

Good luck.

I also would just replace that ancient unit.

The manual does have part numbers and descriptions if you want to repair

New members cannot most photos for after some posts.
Part looks like a ceramic resistor.
You would be better off with replacing converter completely. You would get better battery charging and performace.
Try contacting Bestconverter.com for a good replacement. Maybe one of these Converter lower section
photo 1
Photo 2

I have no idea why i can’t properly upload my photos of the part.

https://drive.google.com/file/d/1TYmSGzcSLUSEN8w2enz2Yl731ZGqGnNV/view?usp=sharing
Pic number 2

https://drive.google.com/file/d/1Q6PT3xhTaYRccW4gL6QhRG7O0mJV8U-c/view?usp=sharing
I’ll try again.