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Guide to RV Wiring

Troubleshooting Guide for 7-Pole RV Sockets & Plugs

See the general section first.

Terminal Diagnostic Index:

• 1. Ground Circuit
• 2. Electric Brakes
• 3. Running Lights / Tail Lights
• 4. 12V Battery Power Line
• 5. & 6. Left and Right Turn Signals
• 7. Auxiliary / Backup Lights