My “while I’m at it” voyage of discovery continues. I had to remove the steering column and repair the key mechanism/starter actuator rod. While I was there I replaced the ignition switch and turn signal switch. I removed the gauge panel to clean and replace bulbs and found the amp gauge was partly melted and the wiring to it burned.
Of course that means now’s a good time to make the switch to a volt gauge and the rewiring that comes with it. I happened to have a new old stock cab wiring harness and was going to replace the old/chopped one and noticed a few subtle differences. I assume, because they’re the same year, the new one with the extra 9 pin plug is meant for options?
Sorry, I’m sure it’s right in front of me, but I can’t find “frame 1” to learn more about this plug that’s on the new, but not the old harness.
Finally, what’s the importance of the blue bulb covers and what does this black wire with the bare metal connector on the old harness go to? Thanks, as always.