Old plug end New plug end
3 4
2 5
1 3
1 (wire runs down to fuse box for + feed)
The ends on the wires you have labelled 3 4 and 5 look like they will slot straight into your standard plug so just use the diagram above. Rhyso is right, the bullet ended wire will be the one needed to run down the A pillar to the grey/blue wire off the back of the dimmer switch to give the illumination (and dimmer controlled)
Give me a shout if you need any help on this as I used to make and sell the adaptors
