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  1. #1

    Default Get Yourself Some Porch Lights!

    How to Wire up a Pair of “Porch Lights” on Your Truck

    Purpose:
    OK, first things first….what are porch lights? Truckers call the lights that are on the back of the cab of the truck that they use to see their hookups and such porch lights. They usually use white lights to light up the back, though sometimes they use a weird color like red or purple for less visibility to other people. Now, I wanted to install a pair of porch lights on my truck because my driveway is fairly narrow and does not have much room for error. On one side of the driveway, I have my daily driver, a Saturn ION. On the other side is a ditch, which I obviously don’t want to fall in to. Backing up the beast of a Suburban into the driveway at night takes some skill, since I only have maybe a foot of play room on each side of me. Normally at night, I can’t see a thing behind me because it’s so dark, and I have to have my roommate help flag me in. Now, I don’t need him because I can clearly see what’s behind me. They are also very handy if I’m pulling a trailer, and want to hitch up at night, or do other things on the side of the road at night. So, without further ado, let’s get into the chevy parts list…

    PS: THE LIGHTS I USED IN THIS PROJECT ARE OFF-ROAD LIGHTS ONLY. PLEASE USE THEM AS SUCH.

    DISCLAIMER: This is the standard disclaimer. I can't be held liable for any damages done to your vehicle etc. Don't kill yourself while you're working...You know, the standard.


    Materials (all prices in US Dollars):
    • 2 driving lights (I found these tractor lights at AutoZone for $15 a piece that produced 55 watts, so I bought 2)
    • About 40 feet of wire (Since each light pulls 5 amps, I went a little beefy with 12/2 stranded in a jacket. It’s technically speaker wire, and I bought it at Home Depot for about 90 cents a foot)
    • Lighted LED switch rated at 20 amps (bought one at RadioShack for about $4)
    • Inline blade fuse holder rated for 30 amps (again, RadioShack at about $2.50)
    • Misc heatshrink, crimps, electrical tape, tie-wraps, etc (probably about $10 worth of this stuff…)

    Total cost: $86.50 (I could have cut the cost down if I had the wire already, or had only gone with a single conductor, but I wasn’t thinking when I bought the wire)

    Procedure:
    Mount the lights. I have 3 holes in the bottom of my rear bumper on each side of the hitch that were the perfect size for the bolt on the light. I used the middle spot since it looked like it would give the ample coverage without spilling over too much. You now want to find a good ground spot. I didn’t have any self-tapping screws or the such handy to make a good ground at the back of the truck, so I ran my ground all the way up to the battery. Wire the lights in parallel. I ran my crossover wire from the drivers side light through the receiver hitch, so it’s not as visible. I ran my wire up to the battery on the passenger side of the truck tie-wrapped to the frame rail and body to chassis mounting bolts/bushings. Make sure that you steer clear of anything that moves, get hot, etc. such as exhaust, suspension parts that are not stationary, steering rack ,etc. Now here comes the interesting part.
    The lights can be wired up a number of different ways, but I will outline the method I took. I wired up a switch in the cab of the truck to a section of 12/2 and ran it to the battery. The way I wired everything up in the engine compartment goes like this: from the positive terminal of the battery, I put a fuse holder in line with a 10 amp fuse. The power then goes through the switch, and then back into the engine compartment by the battery. Then, the return of the switch runs to the lights. The ground runs back up the side of the truck to the negative terminal of the battery. The LED switch I have needs a ground. Since I couldn’t find a handy one I could connect to with what I had, I ran a chunk of 22/2 from the ground of the switch to a bolt in the engine compartment.

    Final Words:
    There’s a few things I could have done better. I could have just used single conductor for everything except the switch line. If I had some self-tapping screws, I could have grounded the lights to something like the trailer hitch receiver in the back and had an easier ground point. I could have actually mounted the switch, instead of propping it between the ashtray cover and the dash, but I’m going to build a wood console where I plan to mount the switch, so this could just be considered a temporary setup. I’m very pleased with the light it produces, it’s a good pattern and plenty of it. I’m considering putting another pair on the front, as driving lights. However, since they’re off-road use only, I can only use them on the country back-roads where I would need them. At factory ride height, when I go up steep hills where my rear bumper is only a few inches from the ground, the lights hang down enough that the mounting angle gets knocked out of alignment. No big deal, since it’s made to be adjustable anyway, I just angle them back down. The angle I chose was straight up and down. Since the lights have a trapezoidal light pattern that spreads well, there was no need for me to angle them down to see the ground close to the tail of the truck, it lights it up anyway. I’m very proud of my lights, as I got the “trucker seal of approval”. My uncle drives an 18-wheeler for a living and he likes them very much. If anyone has any questions, feel free to ask.
    Last edited by Crawdaddy; 09-19-2007 at 03:35 PM.
    Christopher

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 265K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half



    There are 10 kinds of people, those who understand binary, and those who dont...

    Remember kids, the only difference between screwing around and science is writing it down- Adam Savage

  2. #2

    Default

    As soon as I can get photobucket to start cooperating with me, I will be uploading about a dozen pics related to the job...
    Christopher

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 265K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half



    There are 10 kinds of people, those who understand binary, and those who dont...

    Remember kids, the only difference between screwing around and science is writing it down- Adam Savage

  3. #3

    Default

    Nice job ! I have seen those on trucks from time to time.
    Thanks for the nice write up. You'd make a fine Cable assistant with me



    Jamie

    2007 Ford E250(Work van) (Ya, Ya, shut up!)
    1996 GMC Sierra SLE 1500 5.7L/4L60E

  4. #4

    Default

    Installed lights during the day


    View of the lights on at night…bright eh?


    View of the Wiring in the engine compartment


    Another view of the wiring in the engine compartment
    Last edited by Crawdaddy; 09-19-2007 at 06:05 PM.
    Christopher

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 265K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half



    There are 10 kinds of people, those who understand binary, and those who dont...

    Remember kids, the only difference between screwing around and science is writing it down- Adam Savage

  5. #5

    Default

    The wiring going from the front to the back tie-wrapped to the frame rail


    Switch “mounting”


    Closeup of the switch wiring


    The next 2 pics are taken from the back corner of the truck

    View from the street
    Christopher

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 265K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half



    There are 10 kinds of people, those who understand binary, and those who dont...

    Remember kids, the only difference between screwing around and science is writing it down- Adam Savage

  6. #6

    Default

    The light cast on the shed in the truck’s parking spot
    Christopher

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 265K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half



    There are 10 kinds of people, those who understand binary, and those who dont...

    Remember kids, the only difference between screwing around and science is writing it down- Adam Savage

  7. #7

    Default

    Quote Originally Posted by Cableguy View Post
    Nice job ! I have seen those on trucks from time to time.
    Thanks for the nice write up. You'd make a fine Cable assistant with me
    Now what are you implying by that? ;) Am I good, or and I bad?

    With the 2 pics of the driveway....without the lights, you can't see sh*t back there. It's pitch black. I probably should aim them down a bit, as it's not getting the ground right at the truck as well as I was expecting...not a big deal though
    Last edited by Crawdaddy; 09-19-2007 at 06:11 PM.
    Christopher

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 265K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half



    There are 10 kinds of people, those who understand binary, and those who dont...

    Remember kids, the only difference between screwing around and science is writing it down- Adam Savage

  8. #8
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    Default

    Very nice!

    Yeah, I'd be wondering what exactly Jamie is implying too. :P
    Patrick
    Rhode Island


  9. #9

    Default

    No thats great! Git 'R' Done!



    Jamie

    2007 Ford E250(Work van) (Ya, Ya, shut up!)
    1996 GMC Sierra SLE 1500 5.7L/4L60E

  10. #10

    Default

    offtopic: just remember that Jaime...I may be running up there if the imminent invasion of "undocumented visitors" occurs....

    now....back on topic
    Christopher

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 265K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half



    There are 10 kinds of people, those who understand binary, and those who dont...

    Remember kids, the only difference between screwing around and science is writing it down- Adam Savage

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