Mr. Hunter: I have a 1990 SunSport with a 37 gal tank, a the original stock two-wire VDO fuel gauge.

To purchase a new fuel sending unit, as you suggested, I spoke with Mary at Centroid. Surprisingly, Mary said she would need the number on the VDO gauge itself to create the sending unit to determine ohms. She also said she does not think they can do a two wire sender on a VDO gauge; a VDO would need a three wire (the third to the ignition hot). However, the boat is hours away.

Mary searched for other Supra senders that they have made over the years and said none were VDO. That also is surprising.

I'm betting your Centroid Supras had the original VDOs.

I write to see if:

1. you happen to have the number on the VDO or perhaps your Centroid order number (perhaps date of purchase, or anything Mary can use to find your order so she can use that info for mine), and

2. Did they create a two wire or three wire for your VDO?

Many thanks,
Mark.