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1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

Tach install on my 92

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Old 01-04-2011, 11:18 AM
jeffandjess4806's Avatar
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Default Tach install on my 92
I have the plug under the dash can i pick a tach at my local auto store and will it work if i use the Plug under the dash? or do i need a Diesel tach
 
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Old 01-04-2011, 11:46 AM
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Get a isspro tach. well worth the money
 
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Old 01-04-2011, 08:02 PM
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I have a Sunpro that was in a gas truck will it work? if hooked up to the factory plug/wires?
 
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Old 01-04-2011, 10:41 PM
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Originally Posted by jeffandjess4806
I have a Sunpro that was in a gas truck will it work? if hooked up to the factory plug/wires?

Not as is. The pcm signal is 5 volts. Most tachs will not read the low voltage. So I am told.
 
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Old 01-04-2011, 11:34 PM
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agree. you need a 5 volt tach. I have plans to make a adapter with a few transistors one of these days. For now 5 volt is the only option.
 
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