Finally sorted mine out.
I put a 5" peice of wire with solder-tinned ends between the red wire on the sidelight connector and the white wire on the DRL socket.
Tinning the ends of the wire made it a tight fit in the crevice in the plug.
Then I used a small cable tie to hold each end in place by tieing it to the wire it slips up the side of.
I then recoded for LED DRL in [09].
Now the sidelight and DRL both come on in the day, so I replaced the sidelight bulb for any old W5W LED. The DRL 21W was replaced with a superbright HSUN LED.
At night, they go dim so as not to dazzle other road users, just like the later models W12.
