Bastardised igntion systems

[Dell'Orto]

So in my Corolla, I have an interesting hotch potch of ignition system, running a 5K electronic dizzy, with a Ford ignition module and coil. I think these are from XF era fowlcoons etc. Coil looks similar to this one

I want to replace the coil with a nicer looking Bosch HEC715 that I have here, purely because it looks nicer and will be easier to make the wiring look tidier with. Comparing resistance between coils though, the Bosch one is something like 7.5kohm, and the Ford one is 12.5kohm - will this cook something?

[sergei]

So in my Corolla, I have an interesting hotch potch of ignition system, running a 5K electronic dizzy, with a Ford ignition module and coil. I think these are from XF era fowlcoons etc. Coil looks similar to this one

I want to replace the coil with a nicer looking Bosch HEC715 that I have here, purely because it looks nicer and will be easier to make the wiring look tidier with. Comparing resistance between coils though, the Bosch one is something like 7.5kohm, and the Ford one is 12.5kohm - will this cook something?

If the secondary coil resistance (which is measured in kOhms) is lower, it suggests that the primary (measured in Ohms) will be lower in similar ratio. Lower primary means more current through the igniter.

[Dell'Orto]

Well, I measured it myself so I may have $&#$% something up One probe on the outlet of the coil, and one on the positive in of the coil - would that be secondary?

[sergei]

Well, I measured it myself so I may have $&#$% something up One probe on the outlet of the coil, and one on the positive in of the coil - would that be secondary?

Try and measure the primary resistance, between negative and positive terminals on the coil.
You have measured the secondary (actually I think secondary+primary), but that already gives you a picture.