Ignition coil wiring

[Kevin1]

Can somebody take a look at their ignition coil and tell me where each wire goes? According to my Brooklands manual I have mine hooked up correctly but I am getting a very weak, intermittent spark.

The coil was removed to replace a head gasket and clean up the engine bay over the winter. I think I should have taken better notes when it all came apart.

[spider2081]

With the spades of the coil facing the fender well
The pink(from the ignition switch), red (from the control module), and black (from the noise filter) are connected to the terminal closest to the firewall.
The Black( from the control module), Brown/white (to the Fuel injection control unit,)brown/white( to the tach) are on the terminal closest to the radiator.

Hope this helps.
Kevin
Give me a call if you would like photos or any thing else
Dave

[Kevin1]

Hi Dave,
The wiring appears to be correct. Thanks for helping to confirm that.

The ignition module was swapped with a new one but made no difference. The magnetic pickup tests good. After disconnecting everything the secondary resistance measures 10.63K Ohm (book says 10-11K is good). Resistance across the two primary leads is 1.1 ohm, but the book says it should be in the range between .75 and .81 Ohm. Does this indicate a bad coil?

[spider2081]

It's pretty tricky to measure resistance less than 5 ohms. Did you hold just the meter leads together to see what the meter displays. Many modern digital meters have no way of compensating for the meter lead resistance like the old analog meters had. So if you touch the leads together and your meter displays 0.3 ohms you have to subtract that from your reading of the coil primary.
I think your resistance readings are close enough to assume the coil is ok.
Have you measured the voltage on the pink wire terminal to see if you are getting a full 13.75-14.5 volts with the engine running??? Use the coil heat sink for the ground when you check the voltage. I think the control module needs the coil's heat sink to have a good chassis ground for it to operate properly. I think there is a ground wire that connects the coil heat sink to the back plate of the exhaust cam box. Is that wire connected and in good shape??

Good luck