hogie
L plate rider.
Posts: 48 
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Post by hogie on Feb 1, 2023 21:08:02 GMT 1
The original 3 pin relay dies not operate the indicators but just vibrates when activated via the switchgear. I replaced it temporarily with a 2 pin one I had and that works fine but of course doesn't self cancel.
I have now located a replacement 3 pin relay but that doesn't seem to activate at all. Can anyone suggest a direction of travel for diagnosis?
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Post by 4l04ever on Feb 1, 2023 22:06:51 GMT 1
Do you have a self cancelling unit fitted?
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hogie
L plate rider.
Posts: 48
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Post by hogie on Feb 2, 2023 12:48:54 GMT 1
Yes I belive so, if it is this part?
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hogie
L plate rider.
Posts: 48
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Post by hogie on Feb 2, 2023 12:50:26 GMT 1
Sorry pic didn't attach in previous post  |
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Post by elsiefan on Feb 2, 2023 13:19:23 GMT 1
I thought the indicator relay was designed to work with or without the s/c unit?
Mine don't s/c (possibly due to the wire in the speedo coming adrift) but work fine as manual cancel indicators.
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hogie
L plate rider.
Posts: 48
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Post by hogie on Feb 2, 2023 19:54:02 GMT 1
I thought the indicator relay was designed to work with or without the s/c unit? Mine don't s/c (possibly due to the wire in the speedo coming adrift) but work fine as manual cancel indicators. I believe my original relay is faulty as it just vibrates rather than switching the power supply. The indicators work with a 2 pin relay (pinched from my old Kawasaki triple) but of course don't self cancel. But it's interesting the new 3 pin relay doesn't do anything, maybe that too is faulty. I would like to keep the sc indicators to both keep the bike standard and because I like them |
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Post by midlifecrisisrd on Feb 2, 2023 20:35:13 GMT 1
Check the 3 pin relays for letters identifying the terminals
It may be the 3 pins are a different orientation
Steve
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dc12
Weekend rider
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Posts: 55
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Post by dc12 on Feb 2, 2023 20:49:42 GMT 1
It sounds like the new 3 pin relay is bad. Try another one, just make sure it is the same spec as the OEM unit.
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hogie
L plate rider.
Posts: 48
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Post by hogie on Feb 2, 2023 22:37:37 GMT 1
Check the 3 pin relays for letters identifying the terminals It may be the 3 pins are a different orientation Steve Checked the terminals on the oem and replacement relays and they are marked differently.The replacement was advertised for a 1985 31k so in theory should be plug and play |
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Post by 4l04ever on Feb 2, 2023 22:39:38 GMT 1
Which wire is connected by the flasher relay? The black or the yellow/green?
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hogie
L plate rider.
Posts: 48
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Post by hogie on Feb 2, 2023 22:41:15 GMT 1
It sounds like the new 3 pin relay is bad. Try another one, just make sure it is the same spec as the OEM unit. Tried to upload pics but having issues. I suppose my next question would be how do I know the spec of the oem. The one I have removed has no markings on it at all? |
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Post by midlifecrisisrd on Feb 3, 2023 9:42:46 GMT 1
If the terminals are marked differently then it will not work
Only way would be to move the wires around in the plug to suit the new relay
I have never heard of a 3 pin non genuine relay that worked
Steve
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hogie
L plate rider.
Posts: 48
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Post by hogie on Feb 3, 2023 11:16:46 GMT 1
Which wire is connected by the flasher relay? The black or the yellow/green? It's a 3 way block connector with a brown switched live, a brown with white trace and yellow with black trace going into that block. The two brown wires feed into the loom and the yellow black trace picks up another wire of the same colour via a bullet connector. There is a yellow with green trace female bullet exits the loom next to the yellow with black trace but it isn't connected and I can't see any obvious connection for it? |
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hogie
L plate rider.
Posts: 48
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Post by hogie on Feb 3, 2023 11:18:10 GMT 1
Pic attached  |
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Post by midlifecrisisrd on Feb 3, 2023 14:38:47 GMT 1
The extra wire is for when you don't have self cancel
You unplug the trace wire and plug in the other one
Always one spare
Some countries didn't have self cancel
Steve
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Post by 4l04ever on Feb 3, 2023 18:24:26 GMT 1
Which model bike is it? UK Spec?
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hogie
L plate rider.
Posts: 48
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Post by hogie on Feb 3, 2023 20:25:36 GMT 1
Which model bike is it? UK Spec? Bike is a 1985 YPVS F1 UK model |
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dc12
Weekend rider
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Post by dc12 on Feb 3, 2023 20:49:28 GMT 1
The Nippon Denso part number is FU257CE. It was used on various models back then so search on that. It's easy to get the flashers to work with a generic relay but the SC function seems to need the original or one like it.
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Post by elsiefan on Feb 3, 2023 21:19:10 GMT 1
The Nippon Denso part number is FU257CE. It was used on various models back then so search on that. It's easy to get the flashers to work with a generic relay but the SC function seems to need the original or one like it. Would you know if that was the same relay used on the 4L0? |
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dc12
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Post by dc12 on Feb 3, 2023 23:52:50 GMT 1
The Nippon Denso part number is FU257CE. It was used on various models back then so search on that. It's easy to get the flashers to work with a generic relay but the SC function seems to need the original or one like it. Would you know if that was the same relay used on the 4L0? Yes I have that on my 4L0. |
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hogie
L plate rider.
Posts: 48
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Post by hogie on Feb 4, 2023 19:16:04 GMT 1
Check the 3 pin relays for letters identifying the terminals It may be the 3 pins are a different orientation Steve I think I have found a way forward with thus and just wanted to say Steve you were correct. The OEM flasher is different from anything available now in 3 terminal. Holding the relay with the terminals facing you and the centre one at the top, the live or power supply is the same (terminal B oem relay and X in modern replacement.) and is the L/h terminal. The r/h terminal C (oem relay) is the vehicle warning light switch and is the centre terminal on the new relay and marked P. The centre OEM terminal L is the indicator switch and is the r/h terminal on the new relay, marked L. So it seems I need to de-pin the centre and r/h connectors from the OEM connector block, swap them round and and it should work!9   |
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Post by midlifecrisisrd on Feb 4, 2023 19:26:21 GMT 1
If you remove the covers off both relays you should be able to work out which is which
Steve
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Post by JonW on Feb 5, 2023 1:06:53 GMT 1
Silly question... are your bulbs the right wattage? The FUxxxx units will only work properly if the bulbs are right. It says on the side of them what its expecting, 2x27w+3w or something like that.
If you fit aftermarket inds you often get 21w bulbs inside them, not the OEMs 27w. They wont flash then...
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Post by elsiefan on Feb 5, 2023 2:42:17 GMT 1
Additionally, your photo answered a question I had as to whether I had an original flasher relay or not, as all the white printed details on the front of mine have worn off.
Mine looks the same underneath as the oem one in your first pic 😁
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hogie
L plate rider.
Posts: 48
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Post by hogie on Feb 5, 2023 13:15:04 GMT 1
Silly question... are your bulbs the right wattage? The FUxxxx units will only work properly if the bulbs are right. It says on the side of them what its expecting, 2x27w+3w or something like that. If you fit aftermarket inds you often get 21w bulbs inside them, not the OEMs 27w. They wont flash then... Thanks Jon, something else for me to check. The indicators are definitely OEM but I need to check the bulbs as they could have been swopped at some point to 21w |
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Post by midlifecrisisrd on Feb 5, 2023 13:59:26 GMT 1
JDM bikes are 10w indies
Steve
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