1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

tow package

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Old

Sep 26, 2009 | 07:49 PM

#1

DMAN

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tow package

I have a 97 f250hd. It has the factory wiring for trailer lights with a 4 prong plug. So I bought a brake controller and the plug to go to the factory wiring under the dash. I also bought a 7 way plug that plugs into the 4 prong and than you wire the extra wires. I found the extra wires under the truck but I only get power from the brake controller. No 12 volt or back up lights. So I looked under the hood and found the wire for 12 volt and back up plugged off by the fuse box. Why would ford wire the rest and not the auxiliary? How can I complete it?

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Old

Sep 26, 2009 | 08:12 PM

#2

IowanStraight6

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Joined: Dec 2008

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From: Small town Iowa

It was just one of those design flaws, on all of them i have seen including dads they run a 12volt fused right from the battery and tie into the reverse lights in the back

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Old

Sep 27, 2009 | 04:38 PM

#3

DMAN

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I guess I'll just hook a relay in and run the wire to the batt.

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Old

Sep 27, 2009 | 06:24 PM

#4

Diesel_Brad

Fleet Owner

Joined: May 2009

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From: Gilbert, PA

If you put relays in the under hood fuse box you will have 12v to the assesory and back-up pins on the trailer plug

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Old

Sep 27, 2009 | 09:00 PM

#5

DMAN

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Were do you put them in?

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Old

Sep 28, 2009 | 05:35 PM

#6

Diesel_Brad

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From: Gilbert, PA

In the under hood fuse box. If you look in your owners manual it will show you where exactly

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Old

Sep 28, 2009 | 07:51 PM

#7

DMAN

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The wires dead end and have a dummy plug in them before the fuse box. Hooked up a relay and ran it to the battery today.

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