Performed the simplest upgrade on earth today, converted an E36 316 (another one!) from mechanical to electrical fan. Came in overheating, cools fine when on the open road, but cooks in traffic. Turned out the viscous coupling on the fan had packed up, loose and floppy. Unscrewed the whole thing, fitted a secondhand electric 2 speed fan, plugged it in and done! All the wiring is there, plug and play. :rollsmile: