Little purple OD indicator


Information and questions on GL1200 Goldwings (1984-1987)
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tom84std
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Little purple OD indicator

Postby tom84std » Tue Aug 06, 2013 9:01 am



This is probably a rhetorical question with no real answer, but it's worth a try.
My '84 Standard has two indicator switches built into one mechanism inside the shifter assembly. One provides switching for the neutral lamp located between the tach and speedo. The other provides for the little purple indicator inside the speedometer which illuminates when in 5th gear. The little lamp is kinda handy. Lets me know when I'm in 5th. Great when riding in the evening or at night. Impossible to see in full sunlight. The speedo is a sealed unit so I can't work on the purple filter without more trouble than it's worth. A. Locate a bulb of a higher, brighter wattage but risk overheating the purple filter inside the speedo. or B. move the wire to another lamp I could install somewhere else.

Or C. some suggestion I'm not thinking of to make the little purple indicator more effective.

Any ideas?



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artgrantz
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Re: Little purple OD indicator

Postby artgrantz » Tue Aug 06, 2013 10:29 am

Rather than move the wire maybe you could just tap into it and connect to an LED that you can mount somewhere on the dash. That way the original light would still be functional.
You may already know this but the speedo and tach are oil damped. If you turn them upside down the oil will run out onto the face of the instrument. be sure to keep them upright if you remove them to work on this.

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thrasherg
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Re: Little purple OD indicator

Postby thrasherg » Tue Aug 06, 2013 10:59 am

I would be cautious of putting in a higher wattage bulb as the extra heat might damage the speedo unit, but have you thought about replacing the bulb with an LED, they are much brighter and do NOT produce extra heat. It might let you see the OD light more easily in daylight, or as suggested, fit a second LED light to the circuit and mount it somewhere that is shaded from the sun but that you can see when riding..

Gary

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tom84std
Posts: 493
Joined: Fri Jul 13, 2012 7:40 am
Location: Arlington, Texas
Motorcycle: '84 STD 1200
2002 VTX1800
2007 Shadow 750
69 BSA Bitsa
2004 Virago
VW Trike

Re: Little purple OD indicator

Postby tom84std » Tue Aug 06, 2013 3:33 pm

Well I just came home from the auto supply house. The bulb inside my indicator reads 12V 1.7 Watts. I purchased and installed all new bulbs, both illumination and the indicator with a bulb that is exactly the same form but instead of 1.7W these are rated 3.9W. Any bulb radiating less than 10W is really not very hot at all and I'm willing to bet that the increase will not be enough to do any damage. After all it is Texas and around 110* ambient under my carport where the bike is stored. 4W ain't gonna hurt anything. What remains to be seen is whether doubling the wattage is enough to make the indicator visible in moderate sunlight. If not, as per suggested an LED indicator mounted in the plastic panel adjacent to the keyswitch and connected parallel will be the next step.




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