Tools Needed:
1. Back-Off Brake Light Modulator www.signaldynamics.com, $31.95, plus shipping. (My independent motorcycle shop ordered mine in one day for $26.00, no shipping)
2. Phillips screwdriver
3. Wire strippers
4. Package of heat shrink tubing (Radio Shack)
5. Soldering pencil or small soldering iron, with solder
6. Rubbing alcohol or alcohol pads
7. Cigarette lighter or butane candle lighter
8. Scotch cellophane tape, masking tape or something similar for temporary holding.
Procedure:
1. Check brake light for proper functioning
2. Use phillips screwdriver to remove two screws from underneath license plate light assembly; wiggle loose and let it hang down
3. Remove two large phillips screws from bottom edge of tail light assembly, and wiggle loose and let it hang down.
4. Clean metal housing on rear fender where tail light assembly sits, using alcohol pads
5. Place the included double-sided foam tape on the back of the modulator, but do not peel off the outside covering on other side of the foam tape just yet. YOU DON'T WANT TO STICK IT TO THE METAL, YET. Using Scotch cellophane or masking tape, fix the modulator (as in photo) temporarily to a good deep area in the upper right or upper left.
6. Test the location by trying to place the tail light assembly into the area again, making sure the two flanges on the top edge mate with the proper holes. Make sure the tabs where the two screws go at the bottom edge are flush with the metal as before. Tug on the upper edge of the plastic tail light to make sure the lugs at the top edge are in their respective holes. You need to make sure that everything seats down flush, as if the modulator were not even there. This part is tricky, but just be patient, because there is a location that works here.
7. Mark the location that works (as in photo). Now you can remove the backing from the double-sided high-strength foam tape included with the modulator and permanently mount it to the marked location under the tail light housing area.
8. Cut the single white wire running to the brake light bulb in half.
9. Cut sections of the heat shrink tubing about 1-1/2 to 2" long, and slip a piece over each end of the loose wires hanging from the modulator.
10. Using a wire stripper or similar tool, remove about 1/2 inch of insulation from both cut ends of the brake light bulb wire, and twist them together with the ends of the brake light modulator wires. The red wire attachs to the connection coming from the brake switch; the other striped modulator wire attaches to the light bulb end of the brake wire.
11. Solder the twisted wires together.
12. Slide the heat shrink tubing down over the soldered connections, and use a back and forth motion with the butane lighter for a few seconds, to heat the tubing until it shrinks enough to seal the connections. Don't overheat the wires. If you melted the tubing, it was too hot.
13. Test brake light by holding down the brake lever on either side. Your brake light should blink fairly rapidly 4 times, then hold steady for a few seconds, then repeat with 3 rapid blinks and a 4th steady light on for a few seconds. This cycle will repeat until you release the brake lever.
14. Reassemble brake light assembly and license plate light assembly and ride like you stole it!
⚠️ Last edited by FarSideMan on UTC; edited 1 time