Your Intellipower requires four connections:
1. You must ground it
2. You must pug it into a properly intalled, standard 120VAC receptacle*
3. You must connect the positive
12 volt DC battery lead
4. You must connect the negative
12 volt DC battery lead
If this doesn't make sense, please get someone to assist you.
Please ensure that your Airstream is not plugged in to shore power and
Disconnect your battery terminals before installing your converter
* Ensure the 120 VAC receptacle is properly installed with correct polarity!