I forgot to mention that the jumper connects the red/black wire to the orange wire on the switch connector.  Like this.

If you want to verify that power is getting from your battery, to the starter relay, to the fuses, to the main switch, and out of the main switch to the buss (on LS the orange wire is generally the buss), this video should be helpful.

https://www.youtube.com/watch?v=IJl9c2L9cLg

No, have a Clymer's though.

Answers to MIKE:

Your engine runs but the horn and lights don't work? CORRECT

Your engine does not run, and the horn and lights don't work? NO - SEE ABOVE

Your engine runs sometimes, and the horn and lights work sometimes, and when you tug on your battery cable it seems to correct the problem sometimes? ENGINE ALWAYS RUN - TUG HELPED HORN/HEADLIGHT ONCE (BUT NOT NOW)

Took off he ingnition switch and cleaned as per video (was not that bad). Rehooked it and same issues - turn sigs brakes but no horn or headlamp - Then took the entire starter switch assembly off and did the same thing. Nada.
So far, I have..
1) Check all connections.
2) Cleaned and rechecked ingnition assembly
3) Cleaned and rechecked starter assembly
4) Cleaned and rechecked horn assembly
5) Checked grounds

Guys, I'm out of ideas.

I'm gonna give this one last try.

Odysseus, we don't seem to be communicating very well.  I don't understand many of your comments.

"2) Cleaned and rechecked ingnition assembly"

Do you mean the ignition switch?  Did you disassemble the switch like I showed in the video?  Were the contacts or wipers corroded or pitted?


"3) Cleaned and rechecked starter assembly"

Did you remove your starter motor or do you mean that you cleaned and rechecked your starter button switch in the right-hand handlebar switch assembly?  Are you saying that you removed the switch housing and removed the switch, disassembled, cleaned the contacts, and reassembled?  Was there corrosion and pitting on the contacts or wiper?


"4) Cleaned and rechecked horn assembly"

Do you mean the left-hand handlebar switch assembly?  Did you disassemble the switch assembly, remove the horn button, and clean the contacts?  Was there corrosion and pitting on the contacts?


"5) Checked grounds"

Exactly how did you check the grounds?  Where did you check?  What did you use to check, visual inspection or did you do a continuity check with a meter?

Power from your main switch (ignition switch) flows through the orange buss wire to the right hand multi connector under the fuel tank.  From the multi-connector the power flows to the starter button switch in the handlebar switch assembly, through the starter button normally closed contacts, and into the yellow/white wire.  The yellow/white wire returns to the right-hand multi-connector.

If you turn on your ignition switch and touch the positive lead from your meter to the yellow/white wire terminal the meter should read battery voltage.

This shows the yellow/white wire in question.

If you get 12V at the yellow/white wire coming out of the right-hand multi-connector, the light circuit through the starter button switch is OK.

If you don't get 12V at the yellow/white wire coming out of the right-hand multi-connector, then no power is getting to the light contacts in the starter button switch, or the switch contacts are bad, or there is a bad connection in the multi-connector.

Verify that you have power to the multi-connector by probing the orange wire.  With the ignition switch on, you should have 12V at the orange wire.

This wire.