The taurus fan is a very high amp unit dont hold it in your hand and plug it to a battery it will fly away hahah we used a constant amp relay ( 30 or 50 AMP ) like they use in the fords early 70s / 80s for the starter put it close to that fan and run #10 wire to it if you can from relay we used regular battery cable to the relay hot side and it will snap ( sound ) when you conect the smaller term to hot 12 volts pulles lots of amps hope your alt is high amp the taurus has a 100 amp stock jz
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