The diode in the SU pump needs reversed. Tech article by Norman Knock -
April 1996 PDLJMPR.
Les Myer
At 04:36 PM 1/29/98 -0400, you wrote:
>Amy,
>
>One thing about converting from + to - earth that I cannot find the answer
>to is the effect on SU fuel pumps. In theory those pumps have a
>polarity-sensitive diode (they sell one for - earth and one for + earth
>anyway). So, you say, just reverse the wires leading into the pump. OK, but
>does that make your pump move fuel the wrong direction? It may not, since
>these are diaphram pumps. But, I don't know for sure. Does anyone on the
>list?
>
>OTOH, numerous people have made the conversion. I just don't know if they
>have SU fuel pumps with diodes (they may have non-SU, after-market pumps or
>they may have really old, original SU pumps that never had diodes to worry
>about!)
>
>Jeff
>
>
>
>>Jeff,
>>
>> Well common consensus was that I should just convert my Sprite to negative
>>ground. Everyone claims it's fairly easy. There are instructions for the
>>conversion in one of the old issues on the PDLJMPR site. I haven't tried it
>>yet though.
>>
>...
>
>
>_____________________________________________________MV
>
>Jeffrey H. Boatright, PhD
>Senior Editor, Molecular Vision
>http://www.emory.edu/molvis
>jboatri@emory.edu
>(404) 778-4113 Phone
>(404) 778-2231 FAX
>
>
>
>
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