Mixed up wiring for DC fuel pump

[bradleyheathhays]

I just got my first 12V diesel heater and am relocating the fuel pump (pictured below). In the process, I clipped the two wires for the pump before I had them labeled properly. And because it's a cheap Chinese diesel heater, the wires are colored exactly the same, and I can't tell them apart.

1) Polarity wise, does it even matter that I may have mixed up the wires?

2) If so, how can I tell if I have the wires crossed when I hook it back up?

Thanks

 

[roger]

Please try diychatroom.com.

These forums are for those in the electrical trades.

This site is designed for:

• Electrical Contractors
• Electricians
• Engineers
• Inspectors
• Instructors

* This NEC� Forum is for those in the electrical and related industries. Questions of a "How-To" nature by persons not involved in the electrical industry will be removed without notice.