5 Twins, can I see your voltmeter mount?

Norton7d

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I saw a post a couple weeks back where you discussed using some angle iron and making a mount, hoping to see this for inspiration.

Thank you.
 
5twins, seems that a few years back you had the red dash panel brake warning light switched to become a low charging warning light on your 78E ?
That was a very low key but functional and very appealing mod.
Before the very cool digital meter in there ? Either way, nice !
 
Thanks 5T, regarding the flat top steering stem bolt, does that bolt fit the earlier years for a similiar mod?
Also, that thread was full of tips and tricks, I might try a similiar P bracket for exhaust support.
 

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Not the red dash panel light but rather the white one for the headlight failure. This is actually a Pamcopete mod. It turns that white light into a charge indicator light similar to the "Gen" light on your car's dash. It comes on when there is no charging, goes off when there is .....

BRI1Vyb.jpg


PGUAM3N.jpg
 
Although the parts diagrams don't come right out and say so, I think that late flat topped bolt will fit your earlier model. They say the bolt was the same up through '81, and the only difference between the '81 bolt and the '82-'83 flat topped one would be the flat top and drilled and tapped hole. It was used on several other models so you might be able to scrounge one .....

https://www.partzilla.com/product/yamaha/90109-14602-00?ref=d3b14b2af011334b3af2adefa88846f8e94d5e90

But, eBay prices seem quite high ($15 to $20) considering your old style is still available and only costs $2.50. Maybe gggGary can help you out?

5uLHGlb.jpg
 
Not the red dash panel light but rather the white one for the headlight failure. This is actually a Pamcopete mod. It turns that white light into a charge indicator light similar to the "Gen" light on your car's dash. It comes on when there is no charging, goes off when there is .....

BRI1Vyb.jpg


PGUAM3N.jpg
So what triggers the light for lack of charging?
 
The white indicator light was part of the RLU set-up. The RLU would trigger it if one of your headlight beams burned out. Since I removed my RLU, I wasn't using this white light for anything anymore. But, your '76 model doesn't have the RLU, it didn't come along until the '77 model. But anyway, here's how it's done .....

http://xs650temp.proboards.com/thread/9140

The RLU would send power to the white light in the dash if a beam failure occurred. Now, you splice that white light wire (light green) into the R/W wire running between the safety relay and the starter solenoid. This R/W wire only gets power when the safety relay isn't getting any charging voltage, so the light comes on then. Light goes out when the relay is tripped (opened) by charging voltage from the alternator, when charging is happening.
 
Thanks, i will try to figure out the source, now that I have an unused light in my tach for brake light bulb alert, now that im going towards LED..
I can just tie into the old harness for that bulb under the seat.
 
So 5T, all I need to do is splice into this connection here in the first pic, with a wire that runs up to my old brake light bulb check connector, and that will power the bulb in my tach when no chargimg is occuring, hopefully only at idle RPM?
 

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Well unfortunately, not quite. Your brake light checker bulb is wired differently than the white light in my dash. My white light has one wire grounded all the time and the RLU, then the R/W wire after the mod, feeds it power on it's other wire. Your brake light checker bulb is wired sort of the opposite. It gets power any time the key is on through one of it's wires. The other is the ground to complete the circuit but is only connected when the brake light checker connects it. So, splicing into that connector under your seat isn't going to light the bulb. You'll have two power feeds and no ground. What you would have to do is change the other wire up in the cluster from a power wire to a ground wire. Then it should work.
 
I use a multi colour LED from this place in the UK https://gammatronixltd.com/ and so far brilliant kit. I have a small bracket mounted to my gauge cluster bolts and the LED sits there. Green Orange and Red for charging problems. Sometimes I get a red flash with the headlight on and sitting too long at traffic lights. It is fused to the battery to give me a reading of exactly what's going into it as these old bikes can suffer from volt drop.
 
77-79 standard gauges, can be fit into the special center cluster also.
Red chinese volt meter set in clear epoxy to the back of the red lens.
dscn9708-jpg.122587

A bit hard to see in direct sunlight. but otherwise excellent and about invisible when the bike is off.
 
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