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-   -   High beam problems ( https://www.xt660.com/showthread.php?t=26571)

XT Donkey86 23-01-17 12:28
High beam problems
 
I'm chasing electrical gremlins at the min and one of them seems to be when I put my high beam on it has a habit of turning all lights off or will ramdonly flash the odd time :/

Also passing light has a habit of not flashing the loom has been recently checked anyone any ideas

Cheer
Donkey


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Pleiades 23-01-17 22:50
Quote:
Originally Posted by XT Donkey86 (Post 227723)
when I put my high beam on it has a habit of turning all lights off or will ramdonly flash the odd time
I'd be looking for a headlamp earthing (ground) issue with these sort of symptoms.

XT Donkey86 23-01-17 23:03
Quote:
Originally Posted by Pleiades (Post 227730)
I'd be looking for a headlamp earthing (ground) issue with these sort of symptoms.


Noob question were would I find that lol


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Pleiades 23-01-17 23:15
Not sure where is would be on the X, but there will be a common earthing point (a bolt) up front on the frame where the headlight and sidelight earths run to. Trace the wiring back from the headlamp and you'll find it.

What you can do quite easily to test whether the earth is at fault, is to run a 'clean' earth (a separate wire) from the headlamp connector earth terminal directly to the battery temporarily. If the problem goes away then you'll have to find the common earthing point and clean it up, or permanently fix up a clean earth for the headlamp.

What tends to happen with common earths (where more than one electrical item shares the same path back to the battery) is if one of the components struggles to find a route back to earth, it will take the easiest path (electricity is lazy), which is often through another component's circuit and funny things happen: lights go out, lights flash when they shouldn't, lights come on when the shouldn't!

Also check the battery terminals are tight too.

XT Donkey86 24-01-17 08:25
Quote:
Originally Posted by Pleiades (Post 227734)
Not sure where is would be on the X, but there will be a common earthing point (a bolt) up front on the frame where the headlight and sidelight earths run to. Trace the wiring back from the headlamp and you'll find it.



What you can do quite easily to test whether the earth is at fault, is to run a 'clean' earth (a separate wire) from the headlamp connector earth terminal directly to the battery temporarily. If the problem goes away then you'll have to find the common earthing point and clean it up, or permanently fix up a clean earth for the headlamp.



What tends to happen with common earths (where more than one electrical item shares the same path back to the battery) is if one of the components struggles to find a route back to earth, it will take the easiest path (electricity is lazy), which is often through another component's circuit and funny things happen: lights go out, lights flash when they shouldn't, lights come on when the shouldn't!



Also check the battery terminals are tight too.


Will have to look not to sure were to look first lol I think there is a smaller cable attach to the black side of the battery

Here is hoping I don't manage to break something else lol


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XT Donkey86 24-01-17 16:52
Quote:
Originally Posted by Pleiades (Post 227734)
Not sure where is would be on the X, but there will be a common earthing point (a bolt) up front on the frame where the headlight and sidelight earths run to. Trace the wiring back from the headlamp and you'll find it.



What you can do quite easily to test whether the earth is at fault, is to run a 'clean' earth (a separate wire) from the headlamp connector earth terminal directly to the battery temporarily. If the problem goes away then you'll have to find the common earthing point and clean it up, or permanently fix up a clean earth for the headlamp.



What tends to happen with common earths (where more than one electrical item shares the same path back to the battery) is if one of the components struggles to find a route back to earth, it will take the easiest path (electricity is lazy), which is often through another component's circuit and funny things happen: lights go out, lights flash when they shouldn't, lights come on when the shouldn't!



Also check the battery terminals are tight too.


Would I be right in saying this is the ground wire https://uploads.tapatalk-cdn.com/201...566642db44.jpg


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Pleiades 24-01-17 21:38
That is the main earth cable. What you are looking for is the headlamp earth, which will be thinner wire. Trace it back from the three pin connector on the back of the bulb and see where it terminates. Check all connectors while you're at it.

XT Donkey86 25-01-17 12:17
Quote:
Originally Posted by Pleiades (Post 227750)
That is the main earth cable. What you are looking for is the headlamp earth, which will be thinner wire. Trace it back from the three pin connector on the back of the bulb and see where it terminates. Check all connectors while you're at it.


Have booked it in to dealer for them to look because as per my other post I change the speedo sensor and it's still going loopy ..... sadly the plan might have to be replacing the bike as it's starting to more money than it's worth [emoji848]


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Pleiades 25-01-17 23:39
Let us know what they diagnose. I still favour all of your woes being down to an earthing/ground fault somewhere?

XT Donkey86 30-01-17 13:28
Quote:
Originally Posted by Pleiades (Post 227782)
Let us know what they diagnose. I still favour all of your woes being down to an earthing/ground fault somewhere?


Just back in from the dealer they check the wiring high and low and cleaned all the connections and never found no problems

They check the voltage and found a discrepancy in the voltage which suggests to them that the ecu is "tired"

So it's either find a cheap good condition ecu or change the bike [emoji52]


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