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Old 04-11-2010, 08:31 PM   #1 (permalink)
Fishnfool
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Wiring an extra Powerport in a C5500?

I drive a C5500/DuraMax Box Truck for my employer and need to wire an extra Powerport to power a Garmin GPS. Where would be an easy spot to tap in for a source of constant on 12V+? I pulled the lower panel off the dash on the passenger side dash where all the breaker circuits are located but saw no spots to add an accessory circuit or to tap in for constant power. The stock powerport is always hot but I can't figure out how to disassemble the lower dash panel in that area to gain access to the wiring to install a tap.

I'd use the stock powerport but I have an assistant who rides with me daily and the way the stock powerport is located, they are always hitting the end of the GPS power connector with their knee/leg which causes the unit to power off and will eventually break the wires completely.

Any help would be greatly appreciated

Thanx - Dave
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Last edited by Fishnfool; 04-11-2010 at 08:33 PM.
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Old 04-11-2010, 09:53 PM   #2 (permalink)
LtEng5
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fuse adapter/taps are the easiest way to go....use the radio or even the existing power point fuse to tap from and run the wire to the new power point and the easiest closest ground for the ground.....Advanced Auto or Auto Zone will have a couple of different size fuse taps, so you can match to the style of fuse in the truck...
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Old 04-11-2010, 10:25 PM   #3 (permalink)
Fishnfool
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The truck appears to use small breaker modules instead of fuses, at least that's what they look like to me as they have a metal casing around them.

Will these fuse adapter/taps you speaketh of work with them?
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1996 Silverado K2500 ECLB 6.5TD - 4L80E - 4.10 Diff
Diamond Eye 4" Turbo-Back Exhaust
Flowmaster Downpipe + Crossover Tube
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9 Blade Fan and JK Fan Clutch
JK Quick Heat Glow Plugs
Heath PMD Isolator System
Racor 645 Fuel Filter
PML Deep Trans Pan
K+N Air Filter
Bilstein Shocks
Amsoil ATF
PYO Alloys
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Old 04-12-2010, 10:43 PM   #4 (permalink)
DSL Power
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The fuse adapters wont work because of how long the breakers are threat the truck uses instead of fuses. Sorry I don't know where the best place to tap into is.
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Old 04-12-2010, 11:38 PM   #5 (permalink)
DMax Fuzzy
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Tap the existing fuse box under the cover in front of the passenger seat with a Mini Fuse Add-A-Circuit Fuse Holder:



Can be found in lots of places. Let's you have one fuse for the original circuit and a second for the tap.
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Old 04-12-2010, 11:49 PM   #6 (permalink)
LtEng5
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the truck has circuit breakers and C/B's wont fit in the fuse adders and still be able to us other other fuse slot.....
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Old 04-12-2010, 11:55 PM   #7 (permalink)
DMax Fuzzy
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Quote:
Originally Posted by LtEng5 View Post
the truck has circuit breakers and C/B's wont fit in the fuse adders and still be able to us other other fuse slot.....
There is a fuse panel that uses mini ATB fuses under the panel in front of the passenger seat, it is called the IP Distribution Center. 24 fuse locations and two spares in the fuse block. You have to remove two screws holding the cover to access it. Have used them to power several low current draw accessories. Works perfect on my 06 C4500. Plenty of clearance for the existing fuses.
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2005 Honda Goldwing (His toy)
2003 Honda 1800R VTX (Her toy)

Last edited by DMax Fuzzy; 04-13-2010 at 12:11 AM.
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Old 04-13-2010, 07:18 AM   #8 (permalink)
ronjhall
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Quote:
Originally Posted by DMax Fuzzy View Post
There is a fuse panel that uses mini ATB fuses under the panel in front of the passenger seat, it is called the IP Distribution Center. 24 fuse locations and two spares in the fuse block. You have to remove two screws holding the cover to access it. Have used them to power several low current draw accessories. Works perfect on my 06 C4500. Plenty of clearance for the existing fuses.
Some of the C4500/C5500 MD trucks have Circuit Breakers instead of fuses. My 5500 has the circuit breakers. Since OP has a C5500, maybe it is a C5500 thing and did not come on the C4500.
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Old 04-13-2010, 05:13 PM   #9 (permalink)
DMax Fuzzy
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Sorry for the confusion....
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Dale C.

2006 C4500 LLY, Hauler Bed
2006 2500HD CCLB 4X4, B&W Hitch, Air Helper Springs, 60 gallon aux fuel

2006 39SV1 Carriage C-Force Toy Hauler
2005 Honda Goldwing (His toy)
2003 Honda 1800R VTX (Her toy)
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Old 04-16-2010, 02:02 AM   #10 (permalink)
tinkrer
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In my 4500 there was an extra blank power port next to the one that was in there. It had a plug to add the 2nd power port behind the panel. You could tie into that if it is the same.
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