Positive or negative earth?

[mgcjag]

Hi Rory...have a chat with Marek.....he makes a points convesion board for the standard pump...he may be able to sort you a pos/neg conversion...Steve

[abowie]

. Is there an easy way to find out whether she is still positive earth or negative before I cook something wiring it up for a start?

Positive and negative lead acid battery electrodes are different sizes. The positive terminal is bigger in diameter. So if you have the clamp fittings still attached to your leads it should be quickly apparent which one goes to earth.

[rfs1957]

In fact it can't be flipped, but it CAN have the circuit-board changed, that'll be £64 to you, Sir.

So now have a complete +ve earth SU pump conversion kit to pass on (ahem) for, what, £15 ? Have put it in the Wanted/Sale.