Now we have a dilemma, four different overdrive relay wiring diagrams, for Stag, early GT6, late GT6 and generic and two variations of relay connection equivalents, surely they cannot all be correct?ĭoes anyone know what's going on here?) Now, that's curious! Surely, they cannot both be right? My auto-electrical book gives equivalents to the more familiar modern relays as follows:īUT, believe it or not, I have an 'instruction publication' by Lucas # XXB734 showing something different, ie: To add another level of confusion, the markings on the relays changed around 1991, (AFAIK). The Lucas overdrive relay was # 126792 or the alternative # 141769A. One thing that I am sure of is that an In-line Fuse (10 Amps?) should go between the LIVE feed and the relay. I'm not sure which one is the best to use at the moment, but am investigating! I have compared the wiring diagrams, for the cars above, and see that the Stag relay is wired a little differently from the, which also differs from the early GT6-3, which again differs from the generic wiring diagram for an overdrive relay shown in my auto-electrics book.