He didn`t but after re polarising the battery, as Eddie said it worked. If D and F are connected together and the battery +ve is connected two these two wires then the battery-ve is connected to the dynamo case it should run, which it did. When the bike is 100% as I want it, I will sell it on. I did this with all the cars I restored and then went on to another one.In this case, I was in the process of buying another Douglas, I agreed on a price with the seller and even paid for a courier to collect the bike.This should have been on a Friday but sadly the owner died on the Thursday. I am hoping when everything is settled by his relatives I will be offered the bike again and since I don`t want two bikes it will have to go.At some time, not too long ago the bike has been restored, the frame has been powder coated and the brightwork re-chromed.The engine is in excellent order. However, it had apparently been left at a motorcycle repair shop to have some work done but when I collected it sold as seen there were quite a few faults with the bike.So what the shop had actually done I have no idea. Len