ECM grounding locations

[Bill35128]

I have a 2004 Outback and I have now lost three ECMs. I understand it could be due to poor grounding. Where is the ECM ground located so I can check it out?

[mmandley]

Your best bet might be to contact Skiers Choice and ask them directly where they recommend grounding.

Being a boat the only real ground is the engine. This is then grounded through the battery.