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Post by kermitt on Jan 5, 2010 7:41:16 GMT 1
Has anyone fitted any of the new style led indicators to an ntv? ive been getting conflicting stories about whether you need to change relays or put resistors in line to make them work, ive aquired a set that look good on the bike but when i connected them up not even a flash . thanks
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Post by yellowmelos on Jan 5, 2010 8:49:09 GMT 1
I think it's because the LED indicators use such low current draw that the relay does not heat up enough to to switch them off.
a few ways to get round this...
1. fit a new relay that will work with LED's ( dont know if anyone makes one )
2. fit a voltage shunt or Risistor to earth on the lights side of the relay.
3. fit an additional normal bulb ( of 2x normal indicator bulbs ) in the lighs side of the relay ( and put them somwhere you cannot see them
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Post by McF on Jan 5, 2010 10:00:02 GMT 1
Yellowmelos has pretty much answered it for you. Electrickery is not my strong point, but I think this problem is pretty straightforward. These two threads might help: www.ntvhonda.proboards.com/index.cgi?action=display&board=test2&thread=98&page=1www.ntvhonda.proboards.com/index.cgi?action=display&board=electrical&thread=869&page=1It's odd that you get nothing when you use the indicator switch, I'd have expected them to flash very quickly, as explained in the two threads. I think the best solution to start with is an electronic relay If there is a Hein Gericke nearby, £12.99 will buy you one of these: www.hein-gericke.co.uk/shop/product_info.php/products_id/7115My wiring loom and electronic parts are all in a storage box under a lot of other kit. Looking at the wiring diagram, it's the three pole relay you want; I'd take your old one along to compare. Make a careful note of which wire goes on which terminal BEFORE YOU UNPLUG EVERYTHING  Green = Earth (Negative) White / Green = Live (positive) supply in Grey = output to indicator switch I've tried putting ballast resistors in series and they get bluddy hot very quickly Putting additional standard bulbs in series is anothe good idea, but where do you put them; how do you wire them in? This then creates an increased load in the electrical balance and will probably slow the indicators down. Good luck and please report back with news of your success  |
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Post by yellowmelos on Jan 5, 2010 18:57:48 GMT 1
Remember that putting a resistor in will stop current going to the lights from the relay which will have the opposite affect, you want more current to be drawn through the relay as this is what will cause it turn off.
normal indicator relays have a piece of metal that makes a contact, when the indicator light is on the metal heats up and bends breaking the connection.. this turns the indicator off until the metal has cooled down and then makes the contact again and the indicators come on.... and so on.
Electronic ones normally have some kind it timer in them that keeps the lights on for a small amount of time and then turns them off again for the same amount of time.
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Post by wmclaughlin on Jan 5, 2010 21:29:05 GMT 1
Normal indicator lamps are 5Watt so you would need to wire a 27ohm 5W resistor in PARALLEL (i.e. across the LED lamps) with each of the LED lamps to fool the relay into thinking that normal bulbs are fitted unless, of course, you fit an electronic relay as McF and yellowmelos suggest. Also, if you connect them the wrong way around they will not work as they only pass current in one direction. The best solution is to use the electronic relay as it will flash at the same rate whether you have bulbs or LEDs.
Willie
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Post by McF on Jan 5, 2010 21:58:30 GMT 1
Remember that putting a resistor in will stop current going to the lights from the relay which will have the opposite affect, you want more current to be drawn through the relay as this is what will cause it turn off. True, but the reason for putting ballast resistors in the circuit is to "rebalance the system" and "replace" the missing resistance that LEDs do not create compared to filament bulbs. When the resistance in the circuit drops, the bimetallic element heats up more quickly, causing the indicators to flash at a faster rate. This also happens when a bulb fails |
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Post by McF on Jan 5, 2010 22:01:29 GMT 1
The best solution is to use the electronic relay as it will flash at the same rate whether you have bulbs or LEDs. Willie Absolutely, the only downside is that should a bulb fail, the indicators will continue to flash at the same rate, so regular checking of all bulbs is important. |
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Post by Buzzin (^_^) on Jan 6, 2010 0:44:45 GMT 1
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Post by kermitt on Mar 14, 2010 11:11:07 GMT 1
well finally got it all sorted, had to put one resistor on each side, fitted non load sensitive relay and had to put single leds inplace of indicator warning lights in speedo cluster total cost nz$300 = about 150 pounds
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