Thanks Simon. I get it now. I Googled "Retrosound Extension Cable" and found this excellent video that shows the whole process. Very slick. Did not know that was available when I was shopping. Should work well with a DIN face plate of some sort, and the dash mounting depth is perfect. The cable length in my SST is 10' and it reaches to the boot; I think the 9' Retrosound should work OK running next to the tunnel. Under the boot floor on the right side is perfect for the main box if you want to add an amp, as connection to the battery with a relay fits nicely without cables all over the place. I fitted modern speakers behind the stock parcel shelf grilles and added a pair in the kick panel area where there is tons of room; no need to butcher the door panels and could be very easily reversed with a piece of carpet.
https://m.youtube.com/watch?v=CAaGet9P5RMhttps://www.retromanufacturing.com/prod ... 7980139203https://www.retromanufacturing.com/page ... rettyPhotoThe Retrosound tuners appear to work worldwide as well.
Two aux in jacks and two USB in plugs sounds perfect.
A portable SiriusXM radio could be connected the same way I did it to one of the Aux In channels. Control of the SiriusXM radio is left independent of the head unit which is a bit of a hassle but bearable. To be fair all of the major manufacturers have gone away from integrated Sirius portable radio controls, and typically require a dedicated tuner box that requires it's own licence; kind of a drag with a special interest car that may be used sparingly.
The USB input is compatible up to iPhone 4S; I checked with on line support and they are also compatible with the newer Apple products, so good to go there.
The Bluetooth streaming and phone call feature is really handy.
Really like the adjustable colours for the head unit screen. The appliqu? over the screen to have it look like a vintage radio is very trick. The availability of a DIN faceplate should make installation a snap, but check your dash opening size. The VW faceplate at 7 9/16" x 2 1/4" looks good, but IIRC the Lotus dash opening is slightly larger than the 7" x 2" DIN standard. There are larger faceplates available in any case.
Very nice product!
Stu