D412REN Posted Friday at 20:57 Share Posted Friday at 20:57 What do I need it’s for a 13/60 1970 thanks Darren. Quote Link to comment Share on other sites More sharing options...
PeteStupps Posted Friday at 22:11 Share Posted Friday at 22:11 Do you know if it's running a dynamo or alternator? Either way, whichever one of these devices driven by the fanbelt isn't putting out power so your battery isn't getting charged. Check for loose / unattached cables in the first place. If it's a dynamo it may have a broken or missing brush. Or could be a couple of other things. Does the warning light change if you rev the engine, or is it solidly on whatever happens? Quote Link to comment Share on other sites More sharing options...
D412REN Posted Saturday at 06:48 Author Share Posted Saturday at 06:48 8 hours ago, PeteStupps said: Do you know if it's running a dynamo or alternator? Either way, whichever one of these devices driven by the fanbelt isn't putting out power so your battery isn't getting charged. Check for loose / unattached cables in the first place. If it's a dynamo it may have a broken or missing brush. Or could be a couple of other things. Does the warning light change if you rev the engine, or is it solidly on whatever happens? The light is permanently on thanks. Darren. Quote Link to comment Share on other sites More sharing options...
RobPearce Posted Saturday at 08:06 Share Posted Saturday at 08:06 As Darren said, it could be several things, so we need more information. Is it a dynamo or alternator? If you're not sure how to tell, post a photo of the engine bay (preferably from the front left) and we'll be able to tell you. Quote Link to comment Share on other sites More sharing options...
glang Posted Saturday at 08:11 Share Posted Saturday at 08:11 I think once you have confirmed the dynamo/alternator is being driven by the fanbelt the next step will be to call out an auto electrician.... Quote Link to comment Share on other sites More sharing options...
Velocita Rosso Posted Saturday at 12:05 Share Posted Saturday at 12:05 Broken small gauge wire from source to ign lamp is either broken or not connected Quote Link to comment Share on other sites More sharing options...
D412REN Posted Saturday at 21:13 Author Share Posted Saturday at 21:13 22 hours ago, PeteStupps said: Do you know if it's running a dynamo or alternator? Either way, whichever one of these devices driven by the fanbelt isn't putting out power so your battery isn't getting charged. Check for loose / unattached cables in the first place. If it's a dynamo it may have a broken or missing brush. Or could be a couple of other things. Does the warning light change if you rev the engine, or is it solidly on whatever happens? No it stays the same. ? 13 hours ago, RobPearce said: As Darren said, it could be several things, so we need more information. Is it a dynamo or alternator? If you're not sure how to tell, post a photo of the engine bay (preferably from the front left) and we'll be able to tell you. Dynamo 9 hours ago, Velocita Rosso said: Broken small gauge wire from source to ign lamp is either broken or not connected What colour cable would that be please many thanks. darren. Quote Link to comment Share on other sites More sharing options...
glang Posted Sunday at 14:45 Share Posted Sunday at 14:45 On 14/05/2022 at 14:05, Velocita Rosso said: Broken small gauge wire from source to ign lamp is either broken or not connected Im really struggling to see how a having a wire disconnected can keep the ignition light on? Quote Link to comment Share on other sites More sharing options...
RobPearce Posted Sunday at 15:13 Share Posted Sunday at 15:13 24 minutes ago, glang said: Im really struggling to see how a having a wire disconnected can keep the ignition light on? Indeed. Well, specifically, I cannot see how losing the wire VR appears to be describing could do anything other than ensure the light NEVER comes on. However, loss of the brown/green from dynamo to control box might, as the bulb is driven from the brown/yellow. 1 Quote Link to comment Share on other sites More sharing options...
PeteStupps Posted Sunday at 15:33 Share Posted Sunday at 15:33 Yeah the light will stay on if either of the connections on the dynamo are loose or disconnected. @D412REN, there should be two cables attached to the rear of the dynamo: a brown&yellow cable at the top plus a brown&green smaller one lower down. Check they are both present and tight on the terminals. Sometimes the spade connectors get loose and need squashing tighter. If they're both there and connected up, you've either got an issue with the control box (black plastic rectangle thing on bulkhead) or the dynamo. I'd look at the dynamo first. You'll probably have to remove it to see, but have a look down the rear end of it and see if you can see two black carbon squares (brushes) held in by springs, either side pressing against the copper armature (which spins around). These wear out and stop making contact with the armature, and it's also possible that they are present but the springs aren't located correctly or that the wires have chafed and broken. I'll dig my spare dynamo out and take a photo, which will hopefully be clearer than this explanation...! Quote Link to comment Share on other sites More sharing options...
D412REN Posted Sunday at 16:57 Author Share Posted Sunday at 16:57 1 hour ago, PeteStupps said: Yeah the light will stay on if either of the connections on the dynamo are loose or disconnected. @D412REN, there should be two cables attached to the rear of the dynamo: a brown&yellow cable at the top plus a brown&green smaller one lower down. Check they are both present and tight on the terminals. Sometimes the spade connectors get loose and need squashing tighter. If they're both there and connected up, you've either got an issue with the control box (black plastic rectangle thing on bulkhead) or the dynamo. I'd look at the dynamo first. You'll probably have to remove it to see, but have a look down the rear end of it and see if you can see two black carbon squares (brushes) held in by springs, either side pressing against the copper armature (which spins around). These wear out and stop making contact with the armature, and it's also possible that they are present but the springs aren't located correctly or that the wires have chafed and broken. I'll dig my spare dynamo out and take a photo, which will hopefully be clearer than this explanation...! Yes I have the thick brown and yellow plus a small brown and yellow underneath I have put brass connectors back on with rubber boots. the dynamo is brand new. so I’ve ordered a new voltage regulator. when I removed the top today the valve to the right if I push it down the light goes off. but then comes back straight away. thanks for the info Darren. Quote Link to comment Share on other sites More sharing options...
RobPearce Posted Sunday at 17:09 Share Posted Sunday at 17:09 8 minutes ago, D412REN said: the dynamo is brand new. Did you follow the "polarising" instructions when fitting? You need to establish a base magnetic field, which is done by momentarily connecting the smaller 'F' terminal directly to battery live, a few times. 1 Quote Link to comment Share on other sites More sharing options...
PeteStupps Posted Sunday at 17:44 Share Posted Sunday at 17:44 45 minutes ago, D412REN said: when I removed the top today the valve to the right if I push it down the light goes off. but then comes back straight away. Be very careful when playing with the regulator! They're finicky sods Quote Link to comment Share on other sites More sharing options...
glang Posted Sunday at 20:03 Share Posted Sunday at 20:03 Yes and they have an unfused permanent live supply! 1 Quote Link to comment Share on other sites More sharing options...
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