Light switch query

[duTch]

 I have a Light switch query....I'm running a bitza light; post '54 later type with no nacelle or underslung town light.
 I was doing positive (+ve) earth, but was doing my head in so changed it to negative (-ve) earth.
 
All is ok-kinda- when I've been out at night, all's been fine even though I can't see where I'm going except from memory...I wave my hand in front to see if I have light, and the dark doesn't take it so figure all's well...kinda- until the other week the PlodMister felt the need to socialize...(never had aPlod introduce himself before...)."I understand it's old, so no indicators, but does the headlight work...?"
 Yep....wave in front- Prince of Dark stays at bay....Plod is confused...

 Anyway to cut it short, it seems my switch is a tad flaccid, and in addition, I've since added a LED stop/tail, and 60/55 Halogen headlght, and as previously stated changed to  -ve Earth.
  While messing around, I noticed in the "Haynes" and "Service Sheets", that the switch contacts are in reverse order for +ve and -ve Earth (as per pootots..ahwellwuteverfeek )...

 So the question is; ¿¿  if I go buy a replacement switch As per the one on DragAnfly p/n# 31-340 (photo #3- I can buy one locally cheaper), how does the wiring code differ

[chaterlea25]

Hi,
Time for you to go to specsavers LOL 
The second diagram, says view from the underside so it appears the "wrong" way round 

Positive or neg earth does not change the wiring

 
John

[Topdad]

Well spotted john , Dutch will be well ***** off when he see's this . 

[duTch]

  The second diagram, says view from the underside ...

   Mumble grumble. .... hate blind spots. .. oi'll be back- work to be done... .. But am I to presume the newer switch with less connections had the same configuration. ..?

[duTch]

   Ok now that we all had a good chuckle, I'm glad I could do that for you all, I got the $hizzas with the original switch, so bought the new one #31-340, and as I expected the wiring was way different;

 

So the question is; ¿¿  if I go buy a replacement switch As per the one on DragAnfly p/n# 31-340 ......, how does the wiring code differ

....Thanks for the input.

Positive or neg earth does not change the wiring

; was aware of that, but thanks anyway

 So, moving on, it's been a education.

 I've done some forum searches and found one the other day that had a similar issue, but after several beers, I can't find it, so if this sounds familiar let me know.

   I installed the new switch, but the only way I could get the taillight to work with headlight on was to use a diode between Poles 2&4; headlight>tail/city/park/town/sidelight (call'em what you will), as per pic.

     Everything was initially ok, but I didn't get to venture after dark for a bit, and when I did have to use the lights, the onboard Volt-meter went spazzo down to ~2-3V...and the amps stayed -ve @~5-6(A) -ve .

 Otherwise charging appeared to be normal

 I wasted a few hours +++ sussing it out, and had a positive result, but don't know how.

I disconnected everything and measured stuff, and swapped this and that, substituted a spare battery, and then it worked .

   Went for test spin 20Km, and lights on, onboard V-meter says 6.~ V at rest, 7-8ish V @ road speed(spikes a bit more), cuts out/in @~6.0v idle-plus, so all seems ok for now.
 
 Is there a better way to wire the light switch? The only poles that appear to do anything are 2,3,4... nonetheless, it works for me- for now
 
 

[trevinoz]

Dutch, the tail light and speedo light wires are connected to terminal 5, the one with the bridge to the centre.

[trevinoz]

If you look at the switch, in the first position terminals 3 & 4 are bridged which connects the battery to the pilot lamp and the tail and speedo via the bridge to terminal 5.
In the second position terminals 2 & 3 are bridged which connects the battery to the dipper switch and to terminal 5 via the centre bridge and disconnects terminal 4 from the battery thus extinguishing the pilot lamp while leaving the tail and speedo connected.
Clear as mud?

[duTch]

 Yep, clear as good quality mud. I considered that, but seemed like hard work- easier to plug the diode in, and I don't mind the pilot being on as well (in case for some reason the main beam stops working ) as it's a LED one, as is the stop/tail , so little extra load.

 I'll see how it goes,and maybe one day I'll feel a need to change it