Yeah, thanks, it's been a while since I soldered.
When putting the new one in I was afraid to reef much on the little 8mm bolts, they are going into plastic, I think, plus the resistor mounting isn't very strong, so I just went enough so they felt snug and the unit didn't wiggle at all in its mounting.
I think a small (1/4" drive) ratchet drive would be maybe good for this. Here's the lengths that worked for me for a 3/8" drive, a 1/4" drive might work better in terms of being able to turn it more 'clicks', it takes a long time to get them in/out. That is really the hardest part of the whole thing is finding the right tool to fit in there straight onto the bolts.
If I ever had an old one like this I think because I couldn't get the connector off until I got the thing out, it probably would be about as efficient to just cut the wires to the connector, that makes it somewhat easier to get to the bolts (although you don't have to have the connector off to get it out). Have the new connector and resistors ready, and just do it.
Strip the existing wires with a razor blade, go in a circle around, then slit lengthwise, and peel it off. Because it probably won't just slide off using your strippers. If it's black/dirty, fine sandpaper to clean up. Tin well all the ends first with solder this makes it much easier to join them. Use a little alligator clip or like to clip the existing wire to something close to hold it still. Then you will have enough hands.
The marine shrink wrap is at Harbor Freight, it's slightly more money than regular but it's peanuts, and it's thicker than the normal stuff.
When I wrap things all back up I slit big pieces of the shrink wrap and put around the wires, not shrunk, before I tape them, because that black electrical tape sometimes gets all gummy on the wires, so that way you can take it apart if you ever had to later on and not have a big mess. Theoretically you could put these big pieces of wrap around the wires before doing the re-connect, but I was so worried about mixing up the connections I did them one at a time, so then you can't slide the pieces on afterwards (yeah - remember to put your shrink wrap on, that you shrink around the solder joints, before you hook them up!).
Here's the wires soldered and shrink wrapped, but before fully wrapped:
Then I wrap them all the way up to the connector, as described earlier. Don't forget to test it before putting it all back together. The new parts you will be able to get the connector on and off rather easily, unlike the old one. Leaving the connector off while re-installing the resistors makes it somewhat easier to get to the bolts.
I sure appreciate all the help.