RE: Wren 100
Sorry, if OT, but yes, it is a 6V ceramic heating element-like a kero burner minus the kero line. In the UK website the price was 40 pounds. The glow power in the ECU is set on either 6V on Projet and to the maximum with a Gaspar ECU, I believe. Simply replace the glow plug with it. The startup slows down with 2-3 seconds, but it starts very well...and should last for ages.
TP.