I fitted my 3dr heaterbox back in my car and it didnt run.. I had a spare sah heaterbox and wired that up.. Now it works for all of 30 seconds before it blows the 15amp fuse when i touched the fuse it was burning hot.. Does the saph heater box run a higher amp fuse? So can someome tell me what amp fuse there heater uses

 

Last time I measured the current draw of my saff heater motor, it settled at about 14A, so the standard 30A fuse as fitted to saffs is a little excessive, but Ford thought it was OK.

 

Mk2 heater is 30A, is Mk1 15A then?

Martin