Wipers and heater motor blowing fuse after running a minute or two.

[Jim S]

When I turn on either the wipers or heater (or both) the fuse will blow.  I replaced the fuse with a 30 amp breaker and that will trip after a minute or two.  The guages and shifter light are on the same circuit.  Is it because the motors are old and pulling too many amps? Any suggestions to keep them safely running?

Edited 3 hours ago by Jim S
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