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Coil on Spark Plug 1995 530i



Chuck at Automotive Electronics Services kindly pointed me to the secondary pickups I
sought.  He wrote, in part, "About your only option is a secondary adapter set from
BAUM tools."  I just ordered a set for ~$189.  He also reminded me that the primary
waveform can sometimes be a useful window.  However he cautioned that some vehicles
use an integrated transistor on each coil assembly making access to the primary
difficult.

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