This instructable is only about the lights of this bike. There will come some more ibles about other parts of the (still ongoing) project.
The idea here was to fit battery powered LED's into the existing lamps at a low budget. Because when towing a trailer I don't want to spend energy on creating electricity for my lights!
If you're interested head over to step 1 for parts...
Step 1: Parts and Tools
I had two cheap LED-lensers lying around on one side and the bikes old lights, dynamo and a toolbag on the other side. I had no more use for the dynamo, so I sold it on ebay and the toolbag was to beat down (torn straps) so I put it aside.
The lensers were taken apart to get the LED's, the leftovers tossed.
Not pictured: two-wire cable, switch
As tools I used mostly standard equipment. Nothing special here apart from a soldering station and terminal cables: pliers, screwdrivers, side cutters, pen and paper, knife, ...