Cat C7 Wiring Diagram ~upd~ Official

“Now give me the data recorder,” he said. “And your phone. I know a DOT weigh station ten miles south with a permanent camera. You’re going to floor this truck past it at 90 miles an hour, blow the doors off, and let that camera get a perfect shot of the VIN and the time stamp.”

If these wires are shorted together or reversed, your diagnostic tool (like Cat ET or a generic code reader) will say "No ECU Found." Your diagram is essential to verify the 60-ohm terminating resistance across these two pins. Cat C7 Wiring Diagram

Download the official Caterpillar SENR9701 manual, print the wiring diagram on 11x17 paper, and laminate it for your truck’s glove box. Your future self will thank you. “Now give me the data recorder,” he said