Follow up to my previous post.

Dave, I couldn't resist, and got out there with my needlenose pliers. The spades were surprisingly easy to access via your instructions. They seemed tight, and did not seem terribly corroded, but were definitely green. I cleaned both sets of spade connectors with PCB / contact cleaner, and tested for voltage while they were drying. I saw voltage at the end of the harness. After they were dry (and looking clean), I put a dab of dielectric grease on, and reconnected. Voila, I have heat at the RHS mirror again. Since I said this yesterday, I'll just wait until the next frost before declaring a victory. Might be a while, the lows seem to be coming up for the next week or so.

So now, the question is do I pre-emptively do the same for the RHS mirror, or leave well enough alone? It took probably five minutes, and I left the tools and materials out, so now's the time to do it... I'm sure I'll get to it this morning, but I should probably do some real work first.