Hi guys. I have an hypermotard 821 sp with 939 handguard with led indicators on it. I need to replace the cable with the resistor in it (or so ir seems that the resistor is there? Anyone know which cable is this? Regards
It's not very clear exactly what you are asking, do you want to replace a resistor because it's defective or are you fitting LED indicators & need to fit a resistor or do you want help with where that short length of cable connects to ?
Ok. Fair point. I have an hypermotard 821 sp 63 plate with LED indicators on the handguards which come from the 939. My right hand side indicator stopped working and upon inspection, it seems that the LED indicators need a resistor to function (as per photos attached on post 1st message which is what's on the bike now and NOT WORKING). Now the lefthand side also started playing up so I was advised to change them both. I can't see any sort of serial number on the original part that's on the bike. I can't see the name of a manufacturer either. I can't see any information about voltage and/or ohm. What i need is 2 new wires to replace the ones on the bike already. Hope this makes more sense now
I presume the resistor is the circled part in the middle of the cable? I think your best bet wold be to locate the part on somewhere like ducati-parts-online by looking at the relevant year 939 and then get the Ducati part number from there and then you know you will be purchasing the correct part from wherever you decide to source it.
That's correct. Circled is the resistor. The handguards are apparently from the performance pack of the 821 (alloy feame) and not the 939 (plastic frame). Ducati Chelmsford told me over the phone that they can't locate the part even though its oem. Ducati parts online can't locate that part either for the 821 or the 939. I have no idea now on what to fo next.
You could repair it. Something like this could be soldered in. Oxford Motorcycle LED Indicator 18w Inline Ceramic Resistor (EL320) | eBay or a pair Motorcycle Bike LED Indicator Flasher Relay Resistors 21w Pair 5055780331948 | eBay
I have been told that LED run on 11w. Unfortunately my local mechanic binned the damaged wire /resistor so i can't use the old plugs
Finally found the part. Obviously out-of production from the factory. If anyone knows anything about this particular wire with resistor /relay, it's NUMBER 12 on the attached photo. Thank you
Tried but no luck. Got plugs and all. I've tried with a 25w 20ohm and 25w 60ohm and flashing was the same. Too fast and off when revving. Tried a Voltage: 12V Power: 10W and it flashed once and kept going off. If you know what the solution to my problem might be, i am very happy and open to take all knowledge on board and fix it
Using Ohm’s law and knowing what your LED bulb requires you can work out the value of the resistor required. This link is helpful https://proto-pic.co.uk/what-is-a-resistor-how-does-it-work/ I guess the resistors you tried were too small in their resistance.
Generally indicator bulbs are 21W but on many bikes they are only 10W. From Ohms law R = V x V / W Subsituting values; To replace a 21W bulb R = 12 x 12 / 21 = 144/21 = 6.85Ω. So a 7Ω 25W is required resistor. To replace a 10W bulb R = 12 x 12 / 10 = 144/21 = 14.4Ω. So a 10Ω 10W resistor is required. The current drawn by an LED indicator is negligible and can be largely ignored. The resistors must be wired in parallel with each LED indicator.
I wish. Ducati stopped making the wire with code 96610211 5 years ago and there are no specs in existence. I am finding it more difficult by the minute to sort this issue out. MADNESS..
It looks like it may be some sort of driver for the LEDs, not just a resistor. It should possible to get the LEDs to light with a suitable resistor arrangement but the dash or whatever drives them will need to see the correct load to operate properly.
