Help in finding 12 volt key on source under dash??

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Jun 23, 2013 | 09:14 PM

xaviar

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Help in finding 12 volt key on source under dash??

Hi all, I've been trying for hours in locating a 12 volt source (key on only) to run my 2 gauges. I've look at the PTO harness and the single white wire with blue stripe above pedel. Can anyone direct me to a source wire under dash that has key on power? Thanks. My truck is a 2006 F-350 diesel. Thx

Jun 23, 2013 | 09:29 PM

bismic

Fleet Owner

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White wire with light blue tracer, and should be blunt cut - under the drivers side dash. Comes from fuse #29 is hot in run. Should be labeled customer access.

Jun 23, 2013 | 10:28 PM

xaviar

Thread Starter

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Thanks Mark! So, I should be able to tap into that white wire with blue tracer above accelerator pedel and get hot in run only? Does fuse #29 empty? Sorry for the dumb ? I see it takes a 10 amp fuse in my manual and reads customer access.

Jun 23, 2013 | 10:33 PM

bismic

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Unless a previous owner used it for something - it should be blunt cut (unused).

Jun 24, 2013 | 08:03 AM

xaviar

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yes, it worked!

Thx Mark. That was it. It worked!

Jun 24, 2013 | 09:37 AM

jimmyv13

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From: West Bloomfield, MI

That's good info, I ended up finding a source by the headlight switch.

Jun 24, 2013 | 11:22 AM

dannyboy950

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To me the biggest consideration is if the circuit is big enough to carry the amp load of the device planning to be added plus the amp load of the device that the circuit is meant for.
Bismics circuit is unused and the wire size is good enough for 15 amps contineous use, so a good all around circuit.

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Sep 16, 2021 | 02:19 PM

Hartwig

Cargo Master

Joined: Oct 2018

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From: unfortunately Germany

found it!!

Sep 16, 2021 | 02:19 PM

#10

bismic

Fleet Owner

Joined: Nov 2003

Posts: 27,901

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Good deal. I was travelling - got in late last night.

That was one of the nice things to find on our trucks way back in the day!

Sep 16, 2021 | 02:45 PM

#11

Rusty Axlerod

Lead Driver

Joined: Feb 2011

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From: L.A. (Lower Alabama)

While we are on the subject

, anybody know a good place to attach the dimming wire (headlights on) for auxiliary gauges? I though I had found one and finished my install a while back, worked great until I went to high beams on the headlight switch and the gauge goes full bright. Really need to change that.

Sep 21, 2021 | 02:01 PM

#12

1css

Mountain Pass

Joined: Jul 2021

Posts: 117

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From: a mountain in Jasper

Can you use the same wire running the lights for the factory dash lights?

Sep 22, 2021 | 02:01 PM

#13

Rusty Axlerod

Lead Driver

Joined: Feb 2011

Posts: 8,241

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From: L.A. (Lower Alabama)

Possibly. I was kind hoping someone knew the wire/color of the top of their head I guess. A lot of trucks have aftermarket gauges and daylight mode is pretty bright at night.