Technical: 1978 x1/9 fuse & relay - The FIAT Forum i currently have a 1978 bertone x19. im no stranger to the x1/9,s as ive owned a 79 and a couple 82's however this 78 seems a little harder to find literature for. what im looking for particularly is a simple fuse and relay identification chart. ive found several wiring diagrams for similar year and model combinations but nothing spesific to FIAT X1 9 Electrical Day 9 New Fuse Block No more ceramic Click to view on Bing13:29The following video describes how I removed the old ceramic fuse block in my 1978 X1/9 and replaced it with an ATO fuse block. In the video I show both the original fuse block and new fuse block schematics. The fuse block Author: Craig SheppardViews: 931 Fiat X1-9 Main Supply Fuse Box Diagram – Circuit Wiring Fiat X1-9 Main Supply Fuse Box Diagram. Fiat X1-9 Main Supply Fuse Box Map. Fuse Panel Layout Diagram Parts: light switch, combination switch, hi-lo beam switch, battery, ignition coil, fuse unit, hi lo beam relay, headlight raise diverter relay. Bertone X1/9 fuse panel feed/brown wire/junction question The amount of amps going through that block created lots of heat and can melt it, so a PO probably swapped it out and just tied the three wires together with a nut. Here's a picture of the fuse panel from a used one I picked up. You can see the black junction box on the front of the 6 relay holder. Here is a close up of it showing the meltdown.