Point of clarification. I put the probe from the test lamp on the purple wire and with the clip on the other end of the test lamp I touched the under dash steel hoop. The light lit up, indicating the purple wire had power (positive). I then ran the probe from the black ground wire and touched the clip to the hoop and the light did not light up, indicating that the black wire is the ground (negative). If the purple wire did not light up and the black wire did light up, that would indicate that the battery was connected backwards. Of course, the two wires could be connected to the wrong poles on the clock. I didn't want to switch them for fear of burning out the clock.
John
Last edited by linklaw; 29/01/25 06:03 PM.
