Greetings Forum Members,

I've been a member for over 11 years but had to take a break to set up my garage for doing some serious body restoration work on my 30+ year old
107's.
I recently purchased a 1973 450SL to use as a driver or parts car depending on how much it will cost to get it in road worthy condition. Being a Northeast car It has rust issues enhanced by what I 'm discovering was a butchered amateur restoration.
I tuned the engine a few weeks ago and it was running strong. I did not put it on the road due to needed suspension work. Now that I have completed the suspension I cannot get the car to start.
The pump comes on, the ECU relay engages(clicks), engine turns over strong but the spark observed from the coil wire seems to be too weak to fire the plugs.
I swapped out a good coil from another car. Still only weak sparking when engaging the starter.
At one point during my trouble shooting, with the ignition in run position, the two resistors next to the coil got VERY hot. Anyone experienced with this issue? Bad ignition module? Please help.

Thanks,

Knarf

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72 350SL #69
73 450SL Parts Car?
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1985 280sl
87 190E 2.6 - Donated
90 300E-Junked
97 E420