Quick panic!

[David.H]

If the wires on the dynamo are reversed what will that do?.....damage?.....show up as?
6v negative earth RK

[Howard Wright]

Hi David

I did this on the Brookfields which has the same dynamo as the coil RK. I ran the engine for a few minutes before realising.  Doesn’t appear to have done any damage either to the dynamo or to the diode cut out.  Others may comment on the effect on an electro-mechanical cut out.

Cheers

Howard

[David.H]

Did you have an ammeter reading?full scale NEG ?or just picking up power usage when lights are on.
D

[Howard Wright]

Hi David 

Just registering the current drain from the coil.  I stupidly used a red wire for the main output and black for the summer resistor which was the opposite from my RK.  Then wired the switch panel as the RK.  Once I couldn’t see any charge I investigated and found the mistake.  

Hope this helps?

Cheers

Howard

[David.H]

Not a lot!!
But thanks anyway. ..I may look at a diode kit if the cut out is kaput. Any recommendations?
D

[Bob Culver]

Except on summer charge the terminal are joined anyway. Some ignore the Summer option and run their cars with the terminals directly linked at the Dynmo.
If tinkering with the cutout it must not be left operated as happens if you close it by prodding.
As another post the dynamo should not be driven with no external connection to the battery (normally thru cutout)

[Howard Wright]

Hi David

The diode I use is from the Magneto Guys. 

https://www.themagnetoguys.co.uk/smart-diode-cut-out

Cheers

Howard

[David.H]

Thanks to you both
D