At 03:48 PM 9/5/99 -0400, Linda Gaubert wrote:
>.... 1960 MGA 1600 Roadster, getting ready to start the engine for the
first time in the rolling chassis.
>
>Need to hook up the positive ground fuel pump, and there are no markings
on the pump indicating which terminal is + or -. Bought the pump new, so I
am sure it is positive ground, directions in the box have long since been
lost.
>
>One terminal is on the end of the pump (plastic end), the other is on the
side of the pump at the junction.
The terminal on the end hooks to the hot wire in the harness. The terminal
on the side gets attached to chassis ground. The pump is not polarity
sensitive, so it makes no difference what the polairity of the chassis is.
Later model MGB fuel pumps had a diode in them to surpress arcing at the
points, and those units are polarity sensitive. They can be identified by
a substantial bump on the plastic end cover to clear the fat diode inside.
Barney Gaylord
1958 MGA with an attitude
http://www.ntsource.com/~barneymg
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