Coil

[PSL184]

What resistance should I be seeing across coil connections please?

[bmcecosse]

3.2 ohms for a normal Minor coil. You're not doubting your coil - I hope.....

[PSL184]

I would never doubt the coil Roy although mine "appears" to be open circuit and I'm not getting any power to the dizzy

[bmcecosse]

Oh dear....it does sometimes happen. You know well that my exhortations are there simply to make folks consider other possibilities before blinding renewing the coil every time the engine splutters.

[PSL184]

Of course, although I can't complain, it's only 55 years old

[mogbob]

Roy's 3.2 Ohms is for the primary circuit ,read from the 2 low tension terminals.( typical 3 / 3.5 range for a non ballasted coil ).
The Secondary circuit reading Black lead to the ( HT KIng lead ) tower connection and the Red lead to the + Low Tension connection... the reading should be circa 5 Ohms.
Just writing for others on the Forum who are not familiar. Acknowledging that the information re the exact problem has moved on !
Bob

[bmcecosse]

The secondary is actually more likely to be ~ 10K ohms.....(+/- 5K). Certainly not 5 ohms!