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post #1 of 11 (permalink) Old 10-29-2010, 12:20 PM Thread Starter
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handlebar wire routing;

can anyone tell me the correct routing of the handlebar switch wire harness on a 1972 T120V.
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post #2 of 11 (permalink) Old 10-29-2010, 03:08 PM
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Here's mine... 72-T120R. On the left... upper button is kill. middle: signals. Lower: empty. On the right... Upper is horn (a bad choice considering your hand is on the throttle) middle: high beam, lower: high beam flash.

I switched my horn to the "empty" slot on the left. Made more sense to locate it there when you need to use it quickly.
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post #3 of 11 (permalink) Old 10-29-2010, 05:03 PM Thread Starter
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thanks, but thats not what i meant. im looking for the routing of the wire harnesses that come from the handle bar switchs. do they go down and between the handle bar bolts and behind the headlight back through the rubber grommet in frame. i have tried it like that but somehow it doesn't look right. what is the correct way?
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post #4 of 11 (permalink) Old 10-29-2010, 06:00 PM
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They should run down the bars, held by the chrome clips (2 per side), and down past the clamps and into the headlight. They should pass over the top "triple clamp". Remember, these were usually done by the dealer when setting up the bike, so what looks best to you may well have looked best to the dealer.

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post #5 of 11 (permalink) Old 10-29-2010, 06:46 PM Thread Starter
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th way the bike was when i got it they where hanging from the bottom clip on the handle bars and going through the grommet in the frame and pluging into various wires under the top tube of frame.this is a 72 t120 i had a t140 and those went into the headlite shell and pluged into wires there.they don't look right the way i have them now.
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post #6 of 11 (permalink) Old 10-30-2010, 05:24 AM
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As far as I can remember, the only thing going through the big frame grommet is the main loom, from left to right. [on mine]
Not the handlebar switch cables.
Make sure there`s enough slack, when turning to both extremes.
And that any of the cable runs dont get jammed,
Not a good photo:


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post #7 of 11 (permalink) Old 10-30-2010, 10:48 AM Thread Starter
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the more i work on this the more confused i become. i have a flat headlight shell on my bike.when i took it apart a harness came from the headlight and went through the grommet in left side frame , the handle bar harnesses went through the frame grommets, the wires for the instrument lites went through the frame grommets, and they all pluged into the main wiring harness by where the horn sits.it didn't look right to me.
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post #8 of 11 (permalink) Old 10-30-2010, 11:44 AM
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Hi tigercub
I changed my wiring a long time ago,tigercub
Like you I have a flat headlight bowl on a 72 T120R,
the wires came from the switches over the handle bars then through the holes on each side of frame
then connected to the main harness just behind the headstock above the horn.
The great bunch of connectors used under there, gave me loads of problems and was the reason I changed mine.
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post #9 of 11 (permalink) Old 10-30-2010, 01:34 PM
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Quote:
Originally Posted by tigercub View Post
thanks, but thats not what i meant.
Oops - maybe I'll get it right this time... On mine (72), the wires from the switches runs along the bars and meet in the center where they run down past the (flat) headlamp shell. When they pass the large rubber head lamp grommet (that holds the head lamp harness) split at this point; the right is placed into the right side grommet on the frame head tube, and left is placed into the left side grommet on the head tube where they meet under the tank. The head lamp harness exists the large rubber grommet from the head lamp shell, and is placed into the left hand frame grommet.

I've only had the bike for a year but this is how I received it.

On your model you have a "separate" head lamp harness, right?

Last edited by headtube; 10-30-2010 at 01:38 PM.
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post #10 of 11 (permalink) Old 10-30-2010, 06:34 PM Thread Starter
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yes i do have a separate headlight harness. i guess they couldn't get all that wiring in the flat headlight shell so they stuck it under the frame. i like the other style better, it looks a lot neater.
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