SZR660 headlight Modification.

This mod for the SZR660 headlight overcomes voltage drop from dirty switches which makes the lights very dim. It uses existing wires where they don't cause volt drop to make a neat solution. It requires reasonable soldering skill.
1- Trace the cable from the ignition switch to a connection block behind the headlight. Find the red wire leading to the other side of this con block and strip off a quarter inch of sleeve. (this should show as 12 v with ign off)
2- Buy 12 volt relay SP 8 amps (£5), 6 amp wire and spades, one that allows two wire to connect together.
3- Build as shown with 3 wires to light about 8" long and leave the other long. (solder and crimp spades)
4- Feed the 3 wires through rubber cover. (only do when you're sure it's working)
5- pull off brown earth wire and connect it to new coupling spade and reconnect to earth tab.
6- Pull off bulb wire and connect new spades to incoming wire and bulb.
7- Hold 4th new wire onto red wire and test that light works as it should.
8- Wrap relay and any bare wire and connectors in insulating tape as water tight as possible.
9- Cut 4th wire to length and solder to red wire.
10- Repeat for other light.