Many thanks Richard, it now makes sense that the 20a scuttle fuse (fuse 6) is protecting the main +12v supply cable to the dash module, like you say if all the relays are energised simultaneously a 20a fuse value would be about right too.

However, it still seems odd that the 5a dash module fuse (fuse 4 under dash fuse box) is not protecting everything connected to the PCB, can you confirm where I might find these other fuses further up the line that you refer to?

The laminated fuse ID card that came with Monty clearly just shows two fuse boxes, plus the expected 80a battery cable fuse.

[Linked Image]

Also, there's absolutely nothing in Monty's owners manual referring to additional fuses confused2

Thanks again, Dave.

Last edited by Montegue; 08/11/23 11:29 AM.