A/F Ratio gauge 12V wiring

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A/F Ratio gauge 12V wiring #2859017 12/12/20 04:43 PM 12/12/20 04:43 PM
Joined: Mar 2018 Posts: 13 Texas C CudaBrown OP member
CudaBrown OP member C Joined: Mar 2018 Posts: 13 Texas	I'm installing a A/F gauge, AEM UEGO 30-0300, on ac71 Barracuda 383. I initially wired the power from the accessory feed (yellow 3 port connector) within the under dash harness. The O2 sensor "heats" when turned on, and pulls current. I don't want this current draw when the engine isn't running. I'm thinking I need to be on the ignition run circuit (blue wiring) to feed power to the O2 sensor and gauge. How have others dealt with the keyed 12V wiring source? Should I go through the firewall and power from the alternator side of the ballast? Is there a better source location on the dash side? Scott '71 'Cuda 383 (451, shush!) / 727 / Rallye Red

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