So
@Joesmoe is generously going over to
@Boog tomorrow to help with some troubleshooting
Here are some things to check - but first another simplified diagram - this time of the actual schematic reduced to just the primary power distribution circuit;
I've also added arrows to show the current path
So again, current leaves battery positive;
first stop along the route is that in-line connector;
then from that to Fuse 11 in the Fuse Panel;
One the downstream side of Fuse 11, there is a common buss that feeds Fuses 1, 2, 3, 4, 6 & 7;
Output of Fuse 2 goes to pin 1 of the key-switch connector via the White/Blue wire and output of Fuse 4 feeds pin 6 of the key-switch connector via the Orange wire;
When the key is turned on, pin 1 connects to pin 4 and to pin 5 (important to note that pins 4 & 5 are not actually connected to each - only when the switch is closed are 1, 4 & 5 all connected together)
Also, pin 6 is connected to pin 8. (incidentally the graphic for the connections in the key-switch is WRONG in the Factory schematic - I have corrected it in the diagram above)
Note that pins 1 & 6 are not connected to each and are separate distinct circuits coming from separate fuses.
Then from the outputs of the switch;
pin 4 goes on to Fuse 9 via the Blue/Yellow wire (this ultimately feeds the starter/headlight relay)
pin 5 goes on to Fuse 5 via the Green wire (this ultimately feeds the ignition circuit and powers the ECU and Instruments
Pin 8 goes on to feed the Horn and the Brake Lights (this output does NOT go back through the Fuse Panel) via the Orange/Green wire.
(we can ignore the remaining pole of the switch for now - the one that connects pin 2 to pin 3 - that completes the park light circuit but first needs to have power present on pin 4)
We have established that NEITHER Ignition NOR Headlight is currently operational with key ON;
additionally it was confirmed that NEITHER Horn NOR Brake Light works either;
It is unlikely that all three of these connections (1 to 4 and 1 to 5 and 6 to 8) would all have a bad connection at the connector plug or internally at the switch plates;
so a reasonable prediction that there in NO power on BOTH Pin 1 NOR on Pin 6 (& of course no input power means no output power)
So we should back up to the common point for all these circuits - that would be the output of Fuse 11 which is the common buss of fuses 1, 2, 3, 4, 6 & 7.
The best way to measure voltage at the Fuse Box is to apply the meter probe to the metal tab on the top of the Fuse - that way Fuse remains in circuit, yet we can measure voltage at that node.
Leave the meter negative probe on the battery negative and then touch the red probe to the metal tabs of the Fuse of interest
(this is not an R3 fuse panel but principle is the same)
Hopefully the bike is in the FAULT state i.e. nothing actually becomes powered when the key is turned ON
ALL voltage measurements should be made leaving the negative probe on the battery negative and measure at the directed point with the Red Probe,
Leave switch OFF initially
Preliminary - Inspect BOTH battery Terminal Connections, the IN-Line connector and Fuse 11 - these should all be good, tight connections with no sign of burning, arcing or melting.
Fuse 11 should be a good snug fit in its blades.
1. Measure at Battery Positive - this should be >12.5V minimum and hopefully better
Turn the Key ON (even if it does not appear to do anything) - if it DOES turn on, try to provoke the faulty condition - it needs to be in faulty mode to diagnose properly.
2. Does the battery voltage change? If it changes (drops) significantly then the problem is the battery itself if it does not, then proceed ......
Leave key-switch ON
3. Measure at both sides of Fuse 11 - compare this voltage to that on the battery positive (repeat that check as may be required);
If there is a significant drop in voltage between the measurement at the battery and at Fuse 11, the problem would be at the in-line connector.
If voltages still good at Fuse 11 (both sides) proceed .......
4. Check on both sides of fuses 2 & 4 - again any voltage difference from Fuse 11 would indicate a connection problem
If those voltages are still good (and we still have fault condition) proceed ......
5. Go to the Key-Switch connector under tank: take a needle and puncture it through the insulation of the following wires and check for voltage touching probe to the needle
Inputs:
Pin 1 (White/Blue wire)
Pin 6 (Orange wire)
Outputs:
Pin 4 (Blue/Yellow wire)
Pin 5 (Green Wire)
Pin 8 (Orange/Green Wire)
If you have voltage at 1 & 6, but NOT at 4, 5 & 8, then switch is not completing the circuits.
Disconnect the connector plug and inspect for burnt terminals on both male & female sides
6. If you DO have voltage measured on the outputs, pins 4, 5 & 8 from step 5 (but the circuits are STILL not alive) then the problem would be on the battery negative lug not making proper connection to the battery post. (or the post is potentially broken internally)
If none of that yields anything, take two aspirins & call me in the morning!
(actually get in touch and report progress)
Good Luck!