Re: Re Turn signals
If you are in QLD then there are heaps of places that know this sort of thing inside-out and back-to-front and can get you through LO7 compliance, mainly around Bris/Gold Coast. Otherwise, I guess what you are suggesting could be done, but unless you're both capable and competent doing it yourself, probably best left to a qualified auto electrician. Tell 'em what you want, then just pay the bill and drive - easy!!
If you're serious about DIY though, get a copy of the '69 Factory Wiring Diagrams through the usual parts vendors or restoration parts suppliers.
1969 04A Van Nuys-built Z/28. Cortez Silver with dark blue interior and VE3. Sold Clippinger Chevrolet. Raced at Lions in LA.