The temperature gauge appears to be defective. Sending unit and wiring all checked out per the WSM. I took the instrument cluster apart and the gauge visually looks ok so must have an internal issue. I haven't been able to source just the gauge and I don't want to replace the entire cluster with a used one. I'd like to slap on an aftermarket temp gauge and was wondering if anyone has found a gauge that is compatible with the OEM sending unit.