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#1
12-18-2008, 09:51 AM
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Ignition module
I want to bench check the ignition module from my '77 450SL. What I need are the waveforms associated with the module. The amplitude and polarity of the distributor pick up coil waveform & those from the diagnostic plug would be helpful. A schematic of the module would be helpful.
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#2
12-18-2008, 04:19 PM
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No schematics around, but a spare module off ebay should be easy to pick up.
Basically, it's a big darlington and a few other bits thrown in for effect. -cth
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#3
12-19-2008, 12:44 PM
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what is part number, I have several
__________________
Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD  16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace
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#4
12-20-2008, 08:06 AM
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The part number on the module is 0227 100 001B. I'm not sure that it is bad. The tach works, I believe it gets its input from the module. All I need is the waveform off the pick-up coil in the distributor to set up a bench test of the unit. The usually are a modified sawtooth but I don't know the amplitude.
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