1979 MGB Back up lights

["1979MGB" <1979mgb@vixa.voyager.net>]

I've come up with another stumper on my 79 B.  When I have the shift lever
in neutral and push it all the way to the left (between 1st and 2nd) both
back up lights come on.  I was told when I shift from 1st to 2nd they also
come on momentarily as I go through neutral here.  When I put the shift into
reverse gear only one back up light comes on.

I did have the engine out last winter - does anyone know what I may have
mixed up to cause this?????

Thanks

Denny