Series 3 electrics problem

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Edlandy

Edlandy

Active Member
Posts
299
Location
Goole
hi knowledgeable ones! Why does my charging light only work if it's not fastened into the back of the dash? I.e. Plugged in it's on all the time. Hanging loose it works as it should. Why would it be earthing out. Rest of dash is ok. Some background is needed - my Landry seems to be a series 2 or so, with a series 3 dash andwith a dynamo but with negative earth. All like this when bought. What's going on?!
Cheers
 
Untitled.jpg
should be wired summat like this.........

1. Battery
2. Horn
3. Horn Push Button
4. Inspection Light Sockets
5. Panel Lights
6. Panel Lights
7. Tail Light
8. Plate Light
9. Tail Light
10. Side Light
11. Side Light
12. Starter Switch
13. Starter
14. Panel Light Switch
15. Ammeter 16. Ignition & Light Switch
17. Headlight Dipswitch
18. Voltage Control Box
19. Fuse Box
20. Interior Light Lead
21. Fuel Gage
22. Wiper Switch
23. Stop Light Switch
24. Main Beam Warning Light
25. Dynamo
26. Ignition Coil
27. Mixture Switch
28. Mixture Warning Light
29. Charging Warning Light
30. Oil Pressure Light 31. Oil Pressure Switch
32. Distributor
33. Mixture Thermostat Switch
34. Carb Heater (option)
35. Fuel Gage
36. Stop Light
37. Stop Light
38. Headlight, Main
39. Headlight, Main
40. Headlight, Dip
41. Headlight, Dip
 
Last edited:
if 29 is the charge light it seems to be the same principle as for the altenator diags, ignition to dynamo

sounds like the holder is earthing to the dash
 
By the way there's two wires to the holder. could it be that it's series 2 wiring( + earth ) to a series 3 dash ( - earth)?
I'm confused, and fed up!
 
it says 29 is the charge light in that legend, not 28 or am I missing something?

I mistook 18 for the dynano

seem to remember something about dynamos not delivering charge at low revs wasn't that one of the reasons alternators came on the scene?
 
Still think there's something odd going on, light goes off with a few revs on, battery is getting charged ok, the only thing wrong is that when the light fitting is pushed into the dash it - with ignition on and or engine running - it is fully lit all the time.
If the metal part of the dash is getting a current the other bulbs would be lit too
:(:(
 
It will be because the bulb is being grounded through the dash. The controller and dynamo earth the bulb, therefore that is what is happening on the equipment. Check there is not a short between the wire going to the dynamo and the outer case of the bulb holder.
 
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