30 Amp Fuse

[troutstreamnm]

I started to install a new main harness in my 71 Challenger and noticed the old harness had no 30 amp master fuse for the system    My fuse box has a slot with contacts in the upper right corner (see pic of old box).  Is this where the 30 amp fuse goes (all four slots) or does this hold the 30amp and a remote 15 amp fuse.  The slots on the upper left are blanks.  Can I get the fuses at NAPA?  Thanks.

[FY1Cuda]

That spot holds the horn relay. The circuit was protected with a "fusible link" which on your old harness was along the thick red wire going from the starter relay to the bulkhead connector and was wrapped in tape.  It was designed to melt like a fuse when the current got too high.  If your new harness doesn't have that, you can put an in-line fuse in that wire (and NAPA would have that).

[MEK-Dangerfield]

That spot holds the horn relay. The circuit was protected with a "fusible link" which on your old harness was along the thick red wire going from the starter relay to the bulkhead connector and was wrapped in tape.  It was designed to melt like a fuse when the current got too high.  If your new harness doesn't have that, you can put an in-line fuse in that wire (and NAPA would have that).

I agree, but that fuseable link was actually part of the front light harness.


   Mike

[troutstreamnm]

I bought an M&H exact match replacement harness so if it came from the factory with a fusable link, it should be there.  The service manual shows a 30 amp fuse plugged into the fuse box at the top which is why I thought that was the main fuse.  It also shows a horn relay to the left (where my fuse box has blanks).  This is the source of my confusion.  Thanks for the input.

[PlumCrazy]

I started to install a new main harness in my 71 Challenger and noticed the old harness had no 30 amp master fuse for the system    My fuse box has a slot with contacts in the upper right corner (see pic of old box).  Is this where the 30 amp fuse goes (all four slots) or does this hold the 30amp and a remote 15 amp fuse.  The slots on the upper left are blanks.  Can I get the fuses at NAPA?  Thanks.

The horn relay goes in the four slots, a circuit breaker goes in the two slots to the left for power windows/convertible top.

[ted]

no such thing as a 30 amp master fuse.