Ohms my god

[bigyellowthing]

Hi All

Please help this electrical idiot

the Secondary resistance should be 10Kish.

When measuring an ignition coil with my cheap multimeter (rapitest MAS 830 L)

When set to 2M ohms I get a reading of 1.996 on two but 1.49 on the third. 

Is this OK and why doesn't it read on the 20k scale?

Any help greatly appreciated

G

[gs7_11]

Where are you measuring between?

[bigyellowthing]

Measured as shown in manual between ,+ primary and HT output (secondary).

There is only one output on this coil.

[gs7_11]

That's not right.

The reading you're getting is about 1.5 Mohm or higher, which is insulation, not a winding.

Which follows, because you're measuring at the HT output and the 12V supply.

The stated secondary resistance of 10kohm will be between the coil HT output and ground. Either the coil frame mount or the primary negative, depending on whether the mounts are common.