Noticed the low beam on driver's side was out on the Miata, took out the bulb, which is a PITA to put in or out because of a rubber boot, and it wasn't burnt. Noticed the connector had overheated and wasn't making contact. Sanded spade, applied dielectric grease, squeezed the other contact a bit and it's working now. Connector is kinda brittle from the head, might not last.
Anyhow, good to go for now.