Guy's I am building an RB26/RB30 and have got own to the last few bits to put back. The RB30 had an oil warning light switch. Now I have come to put that back in I am not sure I require it? Would I be correct in thinking the oil presure switch in the factory oil cooler doubles up as an oil warning switch? It's so long since I took the RB26 apart I can't remember and looking at the wiring loom I can see enough plugs for it!