The answers are that the exhaut temp warning light is just that a exhaust temp warning light. Can show u how to wire it up if you like. The oil pressure sender in the 1gg provides a vatying resistance depending on oil pressure - so it won't work as a switch for the oil light on ur RA23. U can of course fir the oil pressure switch from the 18R and use that. If u contact me I will explain which wire on the loom u can use.