Found what your looking for seeing if I can find the power connector and get it ready finding out if we have the stuff to test it for you.
Just checked your eBay listing and found the GVP sidecar for $105.00.
Thanks, but no thanks Maybe some one else will pay twice what it should sell for, but I can't afford it.
I guess that's a no on the cartridge?
Well, thanks a bunch for letting me know...