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speed control/compressor fuse blowing 90k5

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la4by4
9/21/2007 8:24:22 PM
can anyone figure out why the fuse 25amp that the a/c  defrost and speed control module that controll the rear wheel antilock keep blowing. switch the heater control to a/c or defrost it blows leaves me with no speedo and error on computer is 24 no speed input.
i changed the whole a/c unit converted to 134a . checked the wiring and all looks good.it seems when the compressor iss turned on it blows but the problem is not there can it be a wire short , a drac problem.
can anyone figure it out
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