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1st Gen Ram Wire Diagrams

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Old Nov 7, 2021 | 11:12 AM
  #21  
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Armyof1
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Default 10v ignition power (good battery) suggestions ?

I have a 92 ram with the Cummins that only has 10v across the ignition wiring anything and everything "key on" only has 10v including the glow plugs PLEASE HELP , COULD THIS BE A RELAY or is there a common issue some one can help me with
 
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Old Nov 7, 2021 | 01:54 PM
  #22  
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Polye86_RoyalSE
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Originally Posted by Armyof1
I have a 92 ram with the Cummins that only has 10v across the ignition wiring anything and everything "key on" only has 10v including the glow plugs PLEASE HELP , COULD THIS BE A RELAY or is there a common issue some one can help me with
typically speaking, if a battery has less then 11-11.2 volts while turning the key that’s not enough to fire the ignition system. Try trickle charging or hot boxing it to start. if the battery’s are more then 3-5 years old it may be time for replacement 🤷🏻‍♂️ Could be dead cell.

as far as inspections, clean and secure all ground points?
 

Last edited by Polye86_RoyalSE; Nov 7, 2021 at 02:01 PM.
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Old Aug 15, 2023 | 06:21 PM
  #23  
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Originally Posted by 86Dodgeman
So I think this should be a permanent post. It took me months of scrubbing the internet, but I finally found a set of First gen Wire Diagrams that give all wire color codes for ALL components, unlike Chiltons and other manuals that don't break down ignition switches and so on. I know they are accurate for my 86 for most wires (some components not installed on my truck), and I know the ignition wires match my setup which is what I have been looking for forever. I am not 100% sure how many years they apply to for first gen trucks, but it is better than nothing and should help A LOT of people out on here. I know they helped me more than I can express in words.
Will the wiring harness off of an 83 fit an 87 then? I understand some odds and ends may come from small equipment devices . I have moved a straight six from an 83 to an 87. The 87 had a straight six as well. The mechanic said it was a no go?
 
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Old Aug 15, 2023 | 06:26 PM
  #24  
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So the wiring harness from an 83 D150 straight six should fit fine on an 87 straight six D150? Last 'mechanic' said it wasn't complying.
 
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Old Aug 15, 2023 | 08:49 PM
  #25  
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Originally Posted by StraightSixList
Will the wiring harness off of an 83 fit an 87 then? I understand some odds and ends may come from small equipment devices . I have moved a straight six from an 83 to an 87. The 87 had a straight six as well. The mechanic said it was a no go?
the mechanic is correct in the aspect of a 83 harness is not plug and play with a 87. they went from a 40 pin firewall connector to a 50 in 84 or 85 but i would say if your mechanic was decent at wiring he could have made it work
 
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