On my F350 I removed the plug and wired it to a Marinco power inlet in the bumper. I put another one on the passenger side for my battery tender.

TheDieselStop.Com - www.thedieselstop.com

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Brian
87 300Dturbo 180K #14 head still running R-12 SOLD 12/2017
02 F350 Powerstroke 180K
05 Chevy Express 1 ton w/Royal Utility box 120K
08 Infiniti FX-35 40K
15 Golf Sportwagen TDI 35K
10 Sprinter 3500 chassis with a Class A Winnebago on it. 56K