I have these cable for $35.  They are for 84-91 Vanagons with the plastic push on connector on the rear of the speedo (earlier speedos had the screw on type).  This is a really good deal as you eliminate that box for the oxygen sensor counter which does nothing except remind you when 60k miles have gone by and then you need to reset it.  So you replace both cables which are normally around $40 each for only $35.  Let me know if you are interested.

Thanks,
Ken Wilford
John 3:16
www.vanagain.com
Phone: (856)-765-1583
Fax: (856)-327-2242