High resistance does not pop fuses. Excessively low resistance does (short circuit means taking a short-cut around the load to ground instead of through it). Something in your setup isn't right to keep blowing fuses repeatedly. Even the twin 12" fans used on late W126 and W124 cars are powered from a 16A torpedo fuse.

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Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]