I was wondering if anyone has a 379 with a 3.70 rear lp22.5 tires 10 speed and Detroit and could send me a pic or let me know what there tach and speedo dip switch settings are? I can't seem to get my speedo dialed in right. Reads 5mph faster than I'm actually going. And I want to double check my tach as well. Thanks
Dip switch settings on a 379
Discussion in 'Trucks [ Eighteen Wheelers ]' started by prerunner404, Aug 21, 2016.
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I been going thru the same thing, I just finally gave up.
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Ya I just can't get the right combo. And have been dealing with it being off.
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Dealer can't help? I would think they would have a procedure on how to set it up properly.
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There was a thread I started here about a year ago about this same issue. A member had the formula on how to set the dip switches but it was to much for me to comprehend. I just threw in the towel
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I called my dealer in Phx and got the run around. Was a joke.
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http://www.thetruckersreport.com/truckingindustryforum/posts/5014952/
Use have to scroll back a couple of post to get the formula for the dip switch setting -
My guess is you would be using #4 listed in the PDF document. Try and fill in the blanks with your numbers and see what happens?
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