You didn't state what model you ownbut I take it you have a Series III

Four sources , you can try these

www.jagbits.com

www.motorcarsltd.com

Yes, it is a Series III. Thanks for the advice. I know both of those suppliers very well. Motorcars Ltd. does most of the work on the car. To date, though, neither has been a source for a white battery cable. I will keep looking.

I will also recommend you our vendors but I have doubts whether they keep it in their inventory

Still , worth give it a try

NALLEY

JPAM

and

ebay