I upgraded my non-charging parallax 7345 unit to a PD4645. It came with the fuse panel. One thing I did was upgrade the battery leads from 8 AWG to 6 AWG. I also pulled all the negative leads from the buss bar, and clip & strip each wire. I re-installed them to a new hole as there was some mild corrosion where they had been originally. If I had had a small round wire brush, I could have cleaned out the holes. Also the battery lead where it attached to the buss and the fuse board had green ends (corrosion), and the fuse board had some discoloration where the battery leads were attached. I presume heat from resistance caused this.
