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Post by blackpool67 on Apr 10, 2019 19:20:51 GMT
Hi all and thanks in advance for any help or advice offered. Mechanically I am a novice, tinkered with the odd car here and there but never anything on two wheels. I bought this pk125 last year and was going to use it for riding around on in the summer but she just sat in the back garden. My son started to strip her down and was going to "rat" her but again his enthusiasm wandered and again she sat there in bits. Last week I put her back together and on the second kick she started up, sounds lovely and again my interest has started. One problem I noticed though, no electrics work at all, no lights, indicators or horn? Ive googled my last week away looking for answers but they send you all over the place so I dont know where to start? Could anyone point me in the right direction as I am keen to get her MOT'd and out on the road She is a 1983 PK125, all standard except for some after market lights on the rear. The indicator unit had been removed from all wire connections so they have been soldered back into place and she has a new light/horn switch on.
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Post by Juan on Apr 10, 2019 21:09:00 GMT
Is this an electric start model?
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Post by jbcollier on Apr 11, 2019 13:25:14 GMT
It had indicators. Does it have a battery?
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Post by 69shau on Apr 12, 2019 18:06:58 GMT
just finished a complete nut & bolt restoration on my 1983 PK125S as factory. I spent a lot of money on a respray engine rebuilt and all the bits & bobs that go with the process. Only thing I thought I could get away with was leaving the original wiring loom and handle bar switches (BIG MISTAKE) After putting the scooter back together, although it started second kick I then spent many an hr chasing electrical faults.
Weather you intend to go full out restoration like me or do just enough to get it road worthy my advice to anyone is to spend about £150 and buy a new main loom, indicator / light witches + Coil, HT lead + flasher unit (ducati regulators witch hopefully should be fitted as standard seldom go wrong can remain) and replace the lot.
You have to remember your scoot is 36yrs old & like most been sitting dormant. When I extracted my loom parts of the wiring crumbled in my hands. It is possible to pull a new loom through the frame without removing the other cables (which I also recommend you replace) if you cut all wires away from the plastic connector block at the horn cover end, tape your new loom to it, loosen rear brake pedal unclip wires to rear brake and simply pull the new loom through.
The best thing enjoying riding your scooter on a Sunday afternoon or popping to the shops etc is being confident it won't brake down or not start! After all the electrics are the heart beat of the scooter!! Only bit of caution I recommend is avoid going for the cheaper Indian parts. I purchased all my parts from VE Scooter parts and happy with the quality. Good luck.
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Post by blackpool67 on Apr 13, 2019 12:03:01 GMT
Hi guys, thanks for replies .... 1.kickstart 2. no battery 3. havent got the money She was in constant use when i bought her last year but cant be sure elecs were working then because we started stripping her down as soon as we got her. All i remember is the guys had a friend riding behind him when he dropped it off, making me think the elcs werent actually working then and his friend was his break light, if you know what i mean.
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Post by jbcollier on Apr 13, 2019 13:32:44 GMT
So, it's an AC bike. Check the AC regulator first. After that, find a wiring diagram and trace each circuit until you find the problem.
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Post by blackpool67 on Apr 13, 2019 14:30:37 GMT
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Post by tzsteve on Apr 13, 2019 17:01:03 GMT
once i see none-standard connectors and sticky tape i expect problems
start at point A and keep going till you have checked and sorted everything if you take your time and treat it like a learning game it will be fun especially if you work outside in the sunshine
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Post by 69shau on Apr 14, 2019 11:08:19 GMT
Well really my friend, having seen the pictures your PK is in about the same state I purchased mine (electrics included) as previous reply mentions, when you see none standard connectors and tape all over the place there have been bodge repairs over the years. Looks light the front indictors are new?
I know you said money is tight but I urge you and try to beg borrow & steal (well maybe not steal) and try to raise £150 for a new loom and switches and other parts I mentioned previously. Your electrics look in a much worse condition than mine and I had faults all over the place.
seriously there is no option here but replace the lot then you can get on with riding it. The Stator plate has been off and retaining screws chewed up by some one but hopefully it is in working condition ( should be as it starts) I see the coil bracket is missing to shouldn't be bolted to frame ,it should be bolted to engine casing.
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Post by blackpool67 on Apr 14, 2019 14:31:46 GMT
well, the multimeter is due next week so i will start checking the stator is working as should and then work my way through everything. Maybe just maybe a new loom is on the horizon
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Post by blackpool67 on Apr 15, 2019 18:32:40 GMT
Well really my friend, having seen the pictures your PK is in about the same state I purchased mine (electrics included) as previous reply mentions, when you see none standard connectors and tape all over the place there have been bodge repairs over the years. Looks light the front indictors are new? I know you said money is tight but I urge you and try to beg borrow & steal (well maybe not steal) and try to raise £150 for a new loom and switches and other parts I mentioned previously. Your electrics look in a much worse condition than mine and I had faults all over the place. seriously there is no option here but replace the lot then you can get on with riding it. The Stator plate has been off and retaining screws chewed up by some one but hopefully it is in working condition ( should be as it starts) I see the coil bracket is missing to shouldn't be bolted to frame ,it should be bolted to engine casing. So, im taking your advice and I am looking at wiring looms but there seems so many different ones for a pk125? how do i tell which I should be looking at as they range in price from £40 - £112. I am selling my xbox to fund this btw
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Post by jbcollier on Apr 16, 2019 3:44:41 GMT
Have a good look at your present harness.
Wires with crumbling insulation? Replace the harness. Which harness? That's tricky. Find a wiring diagram that matches first and go from there.
Wire good but some duff connectors? Just fit new connectors. Use w-crimp connectors and insulate them with heat shrink.
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Post by triffid on Apr 16, 2019 6:54:37 GMT
check your frame number and then go on scooter help to identify your model and hopefully year and this will give you a start point. Looking at your front forks your scoot was originally a pk50.
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Post by 69shau on Apr 16, 2019 16:36:20 GMT
ok, shame about the X-BOX but good move deciding to replace the loom. Do not get bogged down going dealer to dealer as I did. Go on VE Scooters site, very simple user friendly. Simply click Vespa parts, Select PK125S on drop down then click electrical parts.
All the bits I recommend are listed. The loom I think is 45.00, light & indictors switches approx 20.00 each, coil approx 25.00 & flasher 10.00. Go on E-Bay and get 1m of HT lead about 2.50 free postage is what I did.
you shop round and save a pound or two but you will get free postage keeping it all from one dealer.
trust me replacing the lot will save so much grief. VE also do the coil brackets if I remember about 10.00
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Post by blackpool67 on Apr 16, 2019 18:44:52 GMT
check your frame number and then go on scooter help to identify your model and hopefully year and this will give you a start point. Looking at your front forks your scoot was originally a pk50. Panicked a little there ..... but i think the previous owner must have replaced the forks .... but please tell me if any of the info I have found doesnt look right .... The only thing that is confusing me is electric start? what does that refer too.
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Post by 69shau on Apr 17, 2019 7:56:09 GMT
Ok for starters your PK is not electric start, the only 2 looms fitted to early PK'S without ES are with indicator or without.Just order the with indicator one.
As I said if you don't intend to strip it down and keep it rat look, what you need to do is remove seat and petrol tank, disconnect rear brake cable & remove brake pedal bolts. Pull the unit out just enough to expose the switch & disconnect.
Cut all wires to the main connector block under horn cover , tape your new loom to it and pull through. might take a bit of fiddling fishing out the new brake pedal wires and reconnect.
Remove headset bolt, disconnect speedo & front brake cable lift headset up, this will allow you to remove switches and feed new ones in.
If you google Vespa PK125S wiring diagram you can print one off. Only thing which might be different is your after market rear light, can't say how that sits with the fittings.
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Post by tzsteve on Apr 17, 2019 16:49:37 GMT
PK125 a nice little scoot well worth the work
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Post by blackpool67 on Apr 17, 2019 19:20:38 GMT
anyone fancy buying a "project"
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Post by Juan on Apr 17, 2019 19:35:24 GMT
It looks that way although personally I don't get too precious about numbers.
The 80 motor is essentially the same as a 125 only with a smaller bore topend and shorter primary gearing but those could easily have been changed over the years.
I'd be more annoyed about the forks myself.
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Post by 69shau on Apr 18, 2019 6:23:40 GMT
You giving in? what money you thinking?
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