Bosch pencil coil pinouts?

Includes MoTeC CDIs, Ignition Expanders

Bosch pencil coil pinouts?

Postby on Fri Apr 23, 2010 7:42 pm

Does anyone have any info on the connections to the Bosch pencil type of coil. The Bosch # is 0221 504 100 or 464. there are three male pins in a triangle inside a radiused triangular housing.
bosch 0221504100.JPG
bosch 0221504100.JPG (74.03 KiB) Viewed 13162 times
bosch 0221504100 pins.JPG
bosch 0221504100 pins.JPG (66.3 KiB) Viewed 13185 times
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Re: Bosch pencil coil pinouts?

Postby jalai on Wed Jul 06, 2011 6:18 pm

I saw this a little late, but...

coil on the vertical position
- upper pin = secondary ground
- lower left pin = +12V
- lower right pin = coil -

And this is a curve of primary current / Dwell-time at 14V (RED curve / right scale).
Upper curves are different Dwell-time secondary currents.
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Re: Bosch pencil coil pinouts?

Postby Martin on Thu Jul 07, 2011 5:46 am

BMW "N" Engine?
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