I am working with an Howell harness that I purchased used. The original purchaser was never able to get his vehicle to run properly and removed the kit without ever leaving the garage.
The harness provides two leads to the CEL. One is a power supply and the other is a ground. I wired the CEL exactly the same way that I have in previous installations. This has me thinking that there is something wrong with the ECM or mismatch of PROM calibration and CALPAK cylinder counts.
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