Scooterotica

Hi,

Went to start my 66 Li Special and found that I had no lights or horn, although the brake light was working. Took the headset off and saw no visible signs of any unnattached cables, any thoughts to where the problem is would be appreciated, running 12v electronic

Cheers


Peter

if you cant see any probs in the headset you will need to test the powere in wire for the lights it should be the brown wire were the lighting terminal is on the regulator take a feed off that directly to the headlamp terminal and see if that works but before that check your earths and just pull out the connections and give them a going over with some emery cloth the same inside the the bulb holder terminals as well

Shocky,

cheers for the suggestions, will get in the garage tonight



Peter

if the brake light's working then power is coming out of the reg at least as far as that. typically there is a take off by the switch, then the power continues up to the headset [usually on the brown wire]. so check you have power there, if so could be your igntion switch ? so bypass that and see that the lights work...
and check the earths in the headset, many lambretta electrical issues are down to shoddy earth connections.
hth

Hi,

thanks again for the replies guys, have run a feed from the regulator to the headset which now gives me lights and horn, but either with the temporary loop in place or back to how it should be without lights I now have no brake light!

two questions I would appreciate a reply to;

1, easiest way to solve my loom problem, would it be best to replace the complete loom or just run an additional cable?

2, Any idea why I have lost my brake light, new switch has only been on a couple of weeks.( i have checked the rear bulb)

Regards


peter

I'd re-check the rear lamp connections (including the earth and the connection to the switch. Also check the contacts on the bottom of the lamp.

do some continuity checks.
the cable from the regulator to the headset has a short spur that supplies power to the brake light switch [could be the grey wire]. so check current can flow to this point, whilst you're there check that the switch allows this to the flow to the other side [pink] that then goes to the rear bulb.
then check that there is continuity up as far as the headset.
wiggle the wires about a bit to see if this makes any difference.
it may be that the cable is breaking up, and removing it to fit your test wire broke it completey ?
did your problems start when the brake light switch was fitted ? again, moving those wires around may have cracked the outer casing and now the live feed has rubbed through and is shorting ??
are you still using the original 40+yr old loom ?
if so, I'd replace it, as the next thing'll be your rear light doesn't work, or the ignition kill wire breaks down.