From an earlier post of mine....
Here is the early (SWB) fuse block.
The early fuse block (’65-’68) is prone to corrosion failures as
others. The formed “rivet” connections are long-term subject
to corrosion. This occurs in two different places. First is the
spring fuse connection is crimped under the wire terminal and
corrosion occurs there. Second, there are three back-side
connections between fuses on the source side that can corrode
to the wire terminals. If there is any corrosion, resistance
results and the connection gets hot. Typically this damages
the phenolic base and releases the “rivet” connection. This
becomes progressive until the connection is lost – usually
ruining the entire assembly.
Best,
Grady