05-16-2015, 06:23 AM
That's an Electrical magnetic Interference filter. Regarding what it does I'll yield to the more knowledgeable engineers on the 'board.!
1993 Newell (316) 45' 8V92,towing an Imperial open trailer or RnR custom built enclosed trailer. FMCA#232958 '67 Airstream Overlander 27' '67GTO,'76TransAm,'52Chevy panel, 2000 Corvette "Lingenfelter"modified, '23 Grand Cherokee.