Headlamp flasher location

[fatboyoz]

Paddy,
I presumed that CC would not have used two, of anything, if one would suffice. I agree with you. The power supply(6) to C2 on the flashing relay will be disconnected when the main headlamp switch is in the ON position, otherwise the flasher/relay would continue to operate.
Colin.

Colin,

The two microswitches?
The one associated with the flashing main beam function provides an earth so that the headlights will flash when the light pods are selected up with the vacuum switch, without actually turning the main lamp switch on.
The other one is associated with the main lamp switch. It stops you from turning the headlights on whilst the light pods are down and turns them off when the pods are stowed, if you forget to select the main lamp switch off.
Two totally different functions which can't be actuated by the one microswitch.

Yes, I understand the different functions and how they are wired, but looking at the wiring diagram I can't see a reason why it wouldn't work to use a single microswitch, connected to earth on one side, with the other side connected to both relay circuits (ie to the headlamp relay W1 terminal, and also to the flasher unit en route to the W1 terminal of the flasher relay).

The main lamp switch ensures that one or other of the relay C2 terminals is isolated (switch terminals 6 and 8 on the diagram), so there is never a circuit that traverses both relay coils, or at least I can't see one.

As always, I'm happy to be proved wrong. I might just try it to see if it works.

Thanks again for the replies. You learn something new every day.

Paddy

[rodlittle]

Paddy,
I presumed that CC would not have used two, of anything, if one would suffice. I agree with you. The power supply(6) to C2 on the flashing relay will be disconnected when the main headlamp switch is in the ON position, otherwise the flasher/relay would continue to operate.
Colin.

I think on this occasion He did use 2 where 1 would do, the two microswitches are quite simply in parallel and in any case only control the relay coil to be either on or off. The circuit the relay controls has its supply determined by the light switch In logic terms an AND gate ie if Power to C2 AND Gnd to coil then Relay powers the load. The gnd to coil could be from any ground.

On another note I have dug deeper in my boxes of bits and Gary you are quite right there is a relay fixed to the wheel box of my oldest wiper rack.
Thank you for making me dig , Now I have to change my loom again, thank heavens I havent laced it up yet
cheers
Rod