wiring a SEM lights

There's two lighting wires on a SEM. If I use one yellow wire for the headline and running tail light I use one voltage regulator. The other yellow wire I use for the stop tail light with another voltage regulator??.

I have a Speedo, DOT knobbie and with lights and mirrors I'm street legal.

yes no problem !
70 watts X 2 !

One yellow wire from the stator normally feeds a tee piece. One leg of the tee is wired to the voltage regulator. The other leg feeds the headlight and the twilight. The other yellow from the stator is a spare for running spots or charging your IPhone! The voltage regulator sometimes stops bulbs blowing....but don't count on it!

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europe cables street legal
whit SEM/AMAL 125 250 430 WR
original HUSQVARNA !
excuse is in french !

Re wiring, currently stripping down my '82 WR 250, should it have a separate Voltage Regulator or is it incorporated within the coil on the frame under the tank, see pic. Thanks for your help. DD

CABLES

IGNITION
BLACK
GREEN
RED

STOP ENGINE
ORANGE

LIGHTS
YELLOW
X2
70 WATTS X2

regulator original HUSQVARNA
tympanium or DUCATI !
possible other 12 volts



for regulator !
cable yellow "Y"
and after for your handle bars !

this model


or this model simple for your lidhts !

Here's one in english too. I've probably nicked it from somewhere else on this forum
This doesn't show turn signals as the french one does though.

flasching lights in France Europe from 1989 only !
just only rear stop brake and lights front/rear !

y have model picture cable simply for only race !
not for road (police ? ) and contry ?

Thanks chaps! Appreciate your taking the effort to respond!
Regards, DD

The two yellow power wires on the '83 SEM I ran the headline high/low beam on one wire while the other yellow wire operated the brake light/ running lite.

I use both yellow power wires with two regulators.

Why two regulators ??

Using both of the yellow power output wires which are separate I figured I needed two regulators so no bulbs would burnout when running both systems.

Over the years, there were a couple different wiring setups INSIDE the SEM. So, since these bikes are old and could have had the stator swapped around, it's good to check which one you have. You will either find the two yellows discontinuous from each other but continuous with ground... OR... the two yellows are continuous with each other and ISOLATED from ground. That will determine how you wire.

There was another SEM with 2 yellows and a blue. I've seen these on some KTM's but I've not personally found these on a Husky.

My wr400 has 2 yellow and a blue running together with the same flat ends. The coil wires have the round connectors. I'm in the rebuild process and wiring is next on the list. What is the blue wire for?