I'm sorting through the factory wiring diagram (attached) for my bike (a '77), and I'm having trouble sorting out the switch contact grid in the lower left corner - there's contacts on this grid that aren't shown on the diagram's switches. Can anyone help?
I understand the first section, the turn signals - only I assume that there's two each of L and R because there's a front and rear turn signal bulb - but why use L1, L2 and R1, R2 when there is only one L and one R contact on the switch?
This is to show there are two positions in the switch, L1/R1 momentary for lane changes (signals as long as you push the lever up to the detent but not onto it) and L2/R2 fully on for real turns, lever in the detent so it stays on until you switch it off.
The next section has me confused. First of all, what is P(F)? The diagram's switch block has no such contact. As for the upper position light section, I suppose it's meant to show that when a turn signal is on, the position light for that side is extinguished? Makes sense, but again, why have two left and two right connections when there's only one switch contact, and in fact only one position light, for each side?
L and R are the wires to the signal lamps, each goes to both front and rear. P(f) is a connection inside the switch so it doesn't get a terminal or wire color. P(f) gets power for the front markers from the dimmer switch when the headlight is in low beam (or "N" although that is just there to illustrate that the headlight switch is make-before-break, so the headlight does not go off when switching low/high beam). Then P(f) goes over to the turn signal switch to shut off the marker (on PL or PR) on a flashing side.
For the sake of argument, in actual function can the L1-L2 and R1-R2 blocks on the chart be condensed simply to L and R?
as explained above L1 & L2 are switch positions, not wires or connections.
I get the horn section ( )...
The lower headlight dimmer section also has me scratching my head... again, I wonder about that P(F) contact, but also, what's with the (N) switch position, which shows the high and low beam connected simultaneously? My bike's switch doesn't have a middle "N" position, just Hi and Lo, with no selection between them.
Again, explained above - the N is just a point in the lever movement where both lamps are on, there is no detent and it's not entirely easy to get the switch to sit there if you really want all the front lighting on (and it would probably cause battery discharge as the alternator is not overly strong).
The Honda diagrams are unlike almost any other circuit diagram style I've seen but once you get the concept they are pretty easy to comprehend. Doing it this way simplifies the wiring drawing since most of the switch contacts are not shown there.
The part that puzzled me longest is the parking lamp wiring, finally I figured out that it switches which fuse powers the tail light.
And... the magic jumper that changes a black wire to brown/blue... you super need this to get the headlight on if you don't have a lights on/off switch (like the USA, Canada, etc.).
