I have a 1983 Morgan 4/4. I want to change the current switches for Lucas toggle switches. Has anybody got any suggestions how I rewire them? it is the light switch and the heater which may cause a problem,the hazard warning switch will be fitted under the dash, also has anybody fitted a Retro sound radio? (I bought one 3 years ago and still have not got round to fitting it) any suggestions will be most appreciated.