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Re: Diagnostics 466e
Posted to HD/Fleet Forum on 8/27/2020

Don,

These might help. The 3 Box is from 95 to about 97. Single box is cigar box sized ECM mounted on the side of the engine. The NAV Factory Diag software for the pre EPA 07 engines is free. You need a laptop and an RP1210 adapter cable. This is the link to... Login to read more.

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