Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
I'm still not sure exactly what your issue is? From the diagram it looks like they share fuel from either tank, automatically.
Powers & grounds are specified in the diagram that I linked to in the previous response.
See if the diagram applies to your vehicle. If not, please describe your setup & the exact issue that your having. Saying "no power to anything" really doesn't help. Diagram spells out powers & grounds pretty clearly. We need more information if you want us to help you.
Topic Author
