Morris Minor Owners Club

can anyone help please, being a new member having just aquired a 1969 pick-up, i would like to change the earth polarity from positive to negetave earth so i can fit a radio etc. last week i fitted +earth electronic ignition and a new coil, would this have to be changed again. ?

*Moved to electrical by andrew*

I think there's an article somewhere in the technical tips area about how to do the conversion.

The coil will be fine but I think you will probably need to either change to a negative earth electronic ignition module or go back to points.

You would have to swop the + and - leads on the coil for maximum efficiency though it will still work if you don't but All electronic
ignition modules are polarity conscious. If you are lucky it will have a changeover switch.

trenowin wrote:can anyone help please, being a new member having just aquired a 1969 pick-up, i would like to change the earth polarity from positive to negetave earth so i can fit a radio etc. last week i fitted +earth electronic ignition and a new coil, would this have to be changed again. ?

*Moved to electrical by andrew*

job done !! it took all of 10 mins. Thanks for the help.
ps have gone back to the points. anyone want a Pos earth
electronic ignition set!!

trenowin wrote:anyone want a Pos earth electronic ignition set!!

Try advertising it in the "Parts for sale" section of this site.

If you have a dynamo, dont forget you need to change the "memory" of the field winding. Flash the [edit by Roger rust its the small terminal] terminal to earth using a wire. If you don't the dynamo won't charge.
David.