What are the Functions of the Black and Purple Wires Hopkins Plug-In Simple # 47185

Updated 04/01/2011 | Published 03/31/2011

Products Featured in This Question

Adapter 7 Pole to 4 Pole with Tester and Cover

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$12.48

10 Gauge Wire - Blue Primary - Per Foot

(104)

$1.84

40 Amp In-Line Circuit Breaker - Perpendicular Mount Bracket

(97)

$9.84

Question:

i installed this on a 03 dodge ram van 1500 i used white to ground blue elec brake what are black and purple wire for i think black charges batt on rv no clue about purple thanks for the help

asked by: Greg

Expert Reply:

The black wire is the 12 volt power source that you could use to help maintain the charge of a battery or for any other 12 volt accessory. I would recommend that you use 10 Gauge Blue Primary Wire, part # 10-1-1, through a 40 amp. In-Line Circuit Breaker, part # 9510, to your 2003 Dodge Ram Van battery.

The purple wire will have power when your tow vehicle is in reverse. Typically this circuit is used trailer backup lights, or a reverse lockout solenoid on a trailer with surge brakes.

I attached an FAQ article on trailer wiring below for you to check out also.

expert reply by: Jameson C