Thanks Mamu. Yes, replacing that onboard fuse would be a major PITA. Basicly a user would have to send the Mod back to me as most wont have the capability. Would love to find a PTC or similar that was rated 2 amps lower than the onboard fuse. Not much play there though, onboard fuse is rated for 25A and input requirement as high as 23A. Maybe a 20A rating, as I doubt a 12v 23A fuse will be found.