The original ballast and regulator went over on the driver side on my Dart so that's where the harness was dressed. Maybe you could put the ECU on the apron over behind the wiper washer. Whatever you do you need be sure both the regulator and ECU are well grounded. Using sheet metal screws is a poor deal for that, so that means either welded in nuts, "riv nuts" or somewhere that you can reach behind with nuts on the other side, and using star locks. Either than, or a small sub-panel with a separate ground wire.
I believe this is one of the BIGGEST ignition and charging problems!!!!
Poor or no grounding!!! on the VR and ECU
