Hi,
2005 Alphard with towbar fitted. Owned for several years and bike rack lights worked from a 7 pin towbar socket. Recently left bikerack indicator stopped working (the van's indicator does work), all other bikerack lights work. Obviously checked bulb, tried different set of external lights and changed the towbar socket but still left bikerack indicator doesn't work. Any other suggestions? Not 100% on how towbar is wired into van but internet suggests a relay, any pointers gratefully received but probably time to take it to the garage. many thanks