Feb 14, 2010
Got the fromt turn signals done.
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turn signal assemblies on this bike are Japanese units. They
aren't the same as what is shown in my parts manual, and I believe I
must have installed them for some reason long ago. I've read that
the original Lucas units may have been a bit flimsey, and may have
broken. The Japanese units
are pretty simple, using chrome plated pot metal castings with plastic
lenses sealed with a rubber gasket. The assemblies were mounted
on an aluminum step bracket hung from the headlamp mounting bolts. A
single wire feeds the bulb, with the ground return coming through the
mounting brackets. Though they looked weatherbeaten and abused
outside, they were absolutely clean and shiny inside.
chrome of the pot metal bases was pitted in places, but they cleaned
up pretty well.
The lenses shined up really well using a some fine--up to 2000
grit or so--wet/dry paper, then a commercial palstic polishing
compound. The left one is after just washing with soap and water.
I decided to keep the Japanese signals rather than try to get Lucas units.
are all the parts for the two front signals. The external hardware was
replated. Couldn't find a source for the lens gaskets, so had to
reuse them. Also replaced the imitation electrical bullets with real ones.
always thought the "universal" mounting step brackets were awkward and kludgy.
The mounting arrangement also left the signal wire exposed
between the bracket and where it entered the headlight bucket.
decided to find a way to mount the signals directly off the headlamp
mounting points. I made a standoff out of 3/4" hex steel.
The male therads are 7/16-20, as required by the headlight
bucket, while the female threads are M10-1.25 for the short signal
light stalk. The length of the standoff was set to make the distance
between the signals the same as before. The standoff was drilled
through so the wire for the signal could go directly into the headlamp
shell. Then zinc plated everything.
I mounted the signals, I went back and added a ground return wire to
each one. By this year, Triumph had actual ground return wires
for many components on the bike (as opposed to using the frame for the
electrical return path), but not the turn signals. Red is a
conventional color for positive battery voltage, and since this bike is
positive ground, all the return wires are red.
The new return wires required some changes iinside the headlight shell, too.
There is a six-way connector ( the gray one) that acts as a
common connecting point for red wires in the shell, but all positions
were used. I installed a new four-way connector with a new
pigtail to connect it with the original six-way.
I think it's an improvement, but I'm still not sure.
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