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After market circuits

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Old Feb 3, 2005 | 08:49 PM
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F250Wheels
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After market circuits

I'm looking at the wiring diagram for 6.0, And found three inputs marked AFTER MARKET CICUITS VSO.CTO, and TPO. I think one is for fast idle control, any body know what the other two are for?
 
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Old Feb 3, 2005 | 08:54 PM
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SpartanDieselTech
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Originally Posted by F250Wheels
I'm looking at the wiring diagram for 6.0, And found three inputs marked AFTER MARKET CICUITS VSO.CTO, and TPO. I think one is for fast idle control, any body know what the other two are for?
CTO is the conditioned tachometer output; I do not know what the other is for.
 
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