wiring loom is in still no lights

[beemerman]

I have now fitted the main wiring loom to the px disc and she stars up no problem but still no lights !! the only thing i haven't connected is the brake pedal with the two wires not got around to that but all others connected any ideas what to look for now

[doulsy]

Mar 13, 2017 15:05:47 GMT beemerman said:

I have now fitted the main wiring loom to the px disc and she stars up no problem but still no lights !! the only thing i haven't connected is the brake pedal with the two wires not got around to that but all others connected any ideas what to look for now

if there is a short somewhere like wires touching it will stop the light working and give a sh*t reading from stator, i had this problem when i fitted the loom on my p200e, turned out it was a sh*t main bulb holder that caused all the problems, do you have the top headset of? try it with it of so you can see connections, faulty horn can cause it to.

[beemerman]

I've done everything possible now and still no lights I have headset off wiggled all wires cleaned all earths it's doing my nut in ! I really am considering getting shut I'm that peed off with it

[marty27]

You've got to do it the hard way - get a voltmeter, see if the live wires are earthing, follow the loom through. Takes ages but you'll get there. Oh, and measure the voltage coming out the regulator first

[beemerman]

I'm not brill with a voltage meter and somebody on here mentioned getting a bulb with two wires connected to it one to battery and the other end on the wire you are testing and bulb should light up one question I have is the speedo loom I have removed headset and disconnected the circuit board bit from the speedo so I now have a free loom from speedo
I try my bulb method on each terminal on speedo connected block and only a couple light up should all the terminals light my bulb ?
I hope this is not confusing

[sime66]

I’m going to have another go at getting you going because you’re clearly browned-off and stumped, so here goes……

The only wiring diagram for your scooter I could find quickly was from Beedspeed, here (you can print your own if it helps):

www.beedspeed.com/manuals/wiring-px-my.pdf?osCsid=cv4cuhuv8a65qh8et5tcpjo384

(BTW - it would have made the job of trying to help easier if you’d have put your scooter model in your thread, and had fewer threads on the same subject, but I waded through it to find the whole sad story).

Anyway, it seems your wiring is a bit different with regard to where the regulated A/C comes from; it seems the unregulated A/C runs directly from stator to reg/rec, then up to light switch as usual, but as yours is 2006 PX125E with battery, your horn is not from unregulated A/C (like mine), but is on D/C.

I’ve marked-up the wiring diagram to show the following (not very neatly; it’s late on a Friday night):
Yellow highlight = A/C from Stator to Reg/Rec (blue wire on scoot)
Orange Highlight = Regulated A/C from Reg/(Rec) (mainly grey, especially for lighting)
Pink Highlight = Earth (black on scoot)
Red dash biro = D/C (follow it fronm (Reg)/Rec, fuse, starter relay – and interlock, stator motor, ignition switch and horn, via button.


(nice and big to hopefully make it easier to follow)

You’re mainly concentrating on orange and pink on the diagram, which are mainly grey and black respectively on the scooter (this all assuming I’ve got the right wiring diagram, and you’ve still got the same loom).
It is a gutsy job, but you need to find the relevant wires, check them and cross them off as not causing the problem. It seems daunting, but for example if you check you have regulated A/C at the switch, everything before that is OK (back to stator). If you’ve got regulated A/C at your light switch, then check the three wires to the bulbs. Likewise follow your earths back and check for continuity.

You can use you bulb and wire if you really can’t suss out a multimeter, but all you’d have to do is set it to A/C (~) and poke it in. – BUT not just any or all wires; you need to know where they’re from and to.
You can unplug the grey at reg/rec and connect it to a battery, rather than having to do it with your engine running if it helps.
Fault finding electrics is a drag, but you just have to work through it methodically.
I’m assuming you took previous advice and checked you’re A/C into and out of your reg/rec?! – You need to know stator and reg/rec are OK otherwise you’ll be getting nowhere.

Hope that gives you something to think about.

[beemerman]

Wow !!
Massive thanks for this I have looked at drawings and just scratch my head but this is superb i cannot thank you enough hopefully with the help of this I will now find the fault
I shall jeep you posted and once again THANKYOU

[sime66]

Glad it’ll help you get to grips with it.
As it happens I have a little wiring investigation job to do tomorrow too, but I’ve got a 12v outlet on my toolbox top, so don’t have to use the running scoot A/C to check circuits – just plug in a live wire wherever needed.
Hope you make some progress.