Thanks Richard. I think I might try your version. I will get someone competent to look at the wiring as my 4/4 might be different to your car.
The extra sidelight feed needed in the indicator position to power the white light in switchback LED I took from the redundant wingtop light feed. If you don't have the latter on your car the redundant female bullet connector secured against inner wing will be there each side, as shown connecting to short red wire below, otherwise you will have to splice into it. The only fiddly bit is changing the OE two pin econoseal connector which feeds indicators to a three pin one as shown.
![[Linked Image]](https://i.imgur.com/ajnGBSJ.jpeg)
The only difference between our cars is that 3.7 Roadsters are factory wired for all sidelights to be permanently on with ignition. In your case they would need to be selected on light switch. No reason they couldn't be wired permanently on as well though. Being LED's the extra power consumption is minimal.
