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Installing universal speedometer    Technical-Bikes

Started May-13 by Dan (Kamikazedan); 563 views.
Dan (Kamikazedan)

From: Dan (Kamikazedan)


Hi all 

I am doing a bobber build, including installing a Sportster style tank, so I picked up a small Drag Specialties universal unit. There is no specific instruction regarding connections, but most are straightforward. However, there is one that I might be overthinking. I could use some help, particularly if you have done this. 

There are three conx that are specifically for the speed sensor. One is a ground, one is labeled "Green, Signal" and the last is labeled "Orange, sensor power". I assume the green wire will go to the white wire from the sensor. Would you expect the orange wire to go to the blue/yellow sensor wire?

I am concerned because I have no reference for what voltage the sensor expects, or what voltage the speedometer provides on that sensor power wire. Given my druthers, I would rather not fry either the sensor or the somewhat pricier speedo. 

Anybody got input? Thanks in advance... 

Sick Mick* (quick_mick)

That's  a tough one Dan. It sounds like you're on the right track. I've never done it so can't offer much help

steve (HERRICK123)

From: steve (HERRICK123)


My 05 1100 was doing the same thing had it stock with no air filter tube would do this .I put the pod air filter on no more bogging. what air filters do you use really matter, what are your air filters?

what's your setup?

In reply toRe: msg 1
Dan (Kamikazedan)

From: Dan (Kamikazedan)


Following up: it installed just fine. However, I did create my own panic by paralleling the two gauges to see whether the indicator lights came on when they should. They didn't. There is enough crossover wiring in the stock meter to cause issues. Once I just pulled the old one and used jumpers to test the lights, all was well. I then cut the harness from the old gauge and used it to wire in the new gauge so that I can unplug and remove it if necessary. Took about a day. I am fabricating a small bracket to attach the gauge just above the air cleaner. 


From: Zonker1972


were you able to take any pics when you were installing? i think it would be a good addition to the kb.

Dan (Kamikazedan)

From: Dan (Kamikazedan)


Maybe not a bad idea. I can probably cobble something up that would be helpful to someone in the future.