A while ago a friend had the same problem with his moggy minor and if I remember correctly Ivan the fault on his car was the connections on the back of the dynamo had somehow been reversed and his ignition light was permanently on until he swapped them round
It only has 2 wires though. one big fat one with a spade terminal and the small field core one. Had a few suggestions on the facebook site. including checking earth and flashing the dynamo. Im running out of things to try.
Could it be something as simple as the dynamo just needs polarising which it will do if it's come off a positive earth vehicle, which is easy enough to do. One way to check Ivan is take the cover off your regulator box and see if the contacts are burnt ? If they are then you need to polarise your dynamo but also your regulator will be caput
Why are you still using a dynamo, just change it out for an alternator. £50
I know it nice to keep them as standard as possible but an alternator has such a better consistent charging current and you get the benefit of removing the regulator box which is a pain the the ass and just another thing to give you problems.
It's so easy to do, I really would recommend doing it. It was the first thing I did when I got mine and I'm so glad I did.
Today i have flashed the dynamo, checked continuity of wires, run another earth from battery, checked ignition switch wireing and still the bloody light stays on. getting fed up with it.
Hi Stiffy, been following this saga with interest. Your OP said the dynamo was showing output on the meter. So it is working to some extent. Then you say the "charging"/ignition light was always on ever since you first got the car. Obviously you don't mean that literally, you mean it comes on when the ignition switch is turned on, and only ever goes off when the igntiion switch is turned off - yes?
You've checked or changed everything on the charging circuit and it's made no difference... well that's not entirely surprising since your original tests showed that dynamo appeared to be working anyway.
I don't have the circuit diagram to hand, and I am not familiar with this particular issue in detail, but it seems to me if the dynamo was working originally, and changing things on the dynamo circuit hasn't changed anything, then the problem was never anything to do with the dynamo. Someone mentioned the regulator may be shot, but assuming that has also been checked and the issue still remains, that suggests again that the issue is nothing to do with the dynamo or the charging circuit.
So given that, why would a light come on and off with the igntion switch? It could be bad wiring at that switch, or it could be a faulty connection, or short, within the switch. It could conceivably be a fault with the lamp itself, again some issue with the wiring to the lamp or some other wiring around the lamp that is made live when the ignition switch is turned on.
As I say, I don't have any circuit diagram to hand, but I wonder if you turned your attention to the ignition switch and the lamp you might find something - and save yourself the hassle and cost of replacing the dynamo into the bargain!
I spoke to a mate (Terry) tonight. He got me thinking. He said the dynamo needs the light on to work. Maybe the live feed is coming up from the dynamo and if its not got a live feed from the switch it wont go out. however i checked the feed and seem to remember it was all ok. im gonna have another look and failing that will remove the dynamo and regulator and will get them tested.
... will remove the dynamo and regulator and will get them tested.
Apparently contacts fused together within the regulator will cause the ignition light to stay on. Have you not yet opened the regulator ? If it's the old Lucas type I remember there's a large hoop spring catch across the whole thing, slide that off and the black metal casing lifts off to show the coils etc inside. It should be pretty clear if any of the contact points have melted together.
its a brand new regulator chris. I put the old one on and it does the same. Light does go out if i push the contact down but thats not really helpful. its something stupid i have over looked and i will get to the bottom of it.
bugberk: Just put the engine/box into my rolling chassis, and the prop shaft seems to be about 3" short, Have I been given the wrong one? this a total rebuild from a pile of bits.
Dec 16, 2020 13:34:31 GMT
goodtimes: thank you for the drawings! very helpful.
Dec 17, 2020 17:31:00 GMT
vannin: bugberk what is the length of your propshaft you are fitting ? you'll get more replies if you ask on the main forum
Dec 30, 2020 15:30:34 GMT
rooster: can any one tell me what car the canopy lock came of ? ive been told a triumph
Jan 18, 2021 15:23:26 GMT
rogeru7: Hi the basic lock is off a Triumph but it will then need a major mod to be used on the Bug canopy unless you have access to a lathe and a mill it’s not an easy mod
Jan 18, 2021 20:15:56 GMT
Steve: Hi can anyone tell what is the tallest you can be to drive a bond Bug
Feb 25, 2021 13:37:55 GMT
vannin: hi Steve, is this for you and if so how tall are you ? more interest and responses if you use the main forum !
Feb 25, 2021 14:51:06 GMT
steve: i'm 6ft 4in am i too big to fit? . im not good with computers, cant seem to get on other thread, sorry
Feb 26, 2021 10:59:28 GMT
mike: I have 2 bond bugs 1 almost restored just waiting on new upholstery and the other is complete runs sweet and original if Warren is still looking for one Cheers
Apr 11, 2021 12:35:02 GMT
Jon T: Hi all, I am looking to purchase a bug, dont mind if needs some work, anyone point me in right direction. thanks<
Apr 20, 2021 10:52:19 GMT
mysticmick: hi all . i recently purchased a bug . my dream car for restoration . i have the vin plate . with chassis number and engine number . but sadly no reg number . is there any way of finding out the original reg so i could apply for the v5 .. thanks in advance
May 8, 2021 16:20:42 GMT
cdb15: To Mystic Mick: contact HPI and ask if they will do a VIN-only check. Usually if you have the registration it's £19 or so, but may be different from the VIN. Or there is a DVLA procedure using form V62 - check out the government web site for the procedure.
May 17, 2021 20:15:30 GMT
allan: Does anyone know what thread and diameter of the water temp &oil pressure senders on my 700e ,bug no 50
Jul 5, 2021 21:20:32 GMT
Stiffy: Allan just seen your question. Your better of asking a question on the main site as no one seems to respond to the shout box. cheers stiffy.
Jul 11, 2021 19:57:31 GMT
joegab59: cant seem to get my reg number into the bug gallery, simple steps anyone ?
Jul 15, 2021 14:25:51 GMT