Jim, It's not the fuse itself that is the source of the heat so much as it is the poor connection to the fuse. If you want to reduce your chances of a melt-down, use a heavier duty style of fuse & fuse holder with the original 20 amp rating. The Delorean engineers thought they could get away with using a fuse & holder rated at 20 amps that was meant for a low duty cycle and instead they used it for a high or even continuous duty cycle situation (as in the case with the headlight high beams which causes another melted spot on the fuse block.) Either you need to take apart and clean the contacts periodically and hope it doesn't melt down despite your efforts or else replace it with a reasonable design that does not require this sort of maintenance. Walt Tampa, FL