Quoted from Buzz:
It looks correct and yes you will have to solder about 12 or 15 wires to the board. Use small gauge solder to help. I also use some heat tape to hold in place and clip and re strip the wire and recrimp any burnt connectors.
No, the -54 are all connectors. No soldering needed to replace.
What the op is looking at is correct. The bridge rectifiers are just mounted on the topside, with a heat sink on it.