HEI in Mopar ECU casing

The hardest part of this mod is getting that crap potting epoxy out. It is stinky and messy.

Next was getting the solder to stick to the 4 pins. I cleaned them up and slightly roughened them with emory cloth. Then a dab of soldering flux and put a tight hook on your wire and hold it still and heat the pin AND the wire both with the soldering iron and touch the solder to the wire. When the heat melts the solder make sure there is good coverage without over heating the pin. Let it cool without moving that wire.