Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
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lemon-manuals.org.ua
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Oxygen Sensor Relay: Diagrams
2007-2009 Ram truck, 6.7L, use an O2 module for oxygen sensor heater control.
The oxygen sensor module (1) is located under the vehicle. It is bolted to the outer side of right frame rail (4).