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 > Mystery Plug..2007.5 Dodge RAM 3500

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CumminsDriver

Newcastle Calif.

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Joined: 09/09/2006

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Posted: 11/28/08 04:42pm Link  |  Print  |  Notify Moderator

mr. ed wrote:

Hannibal wrote:

Possible lead for a dash speaker? No voltage makes me think maybe a speaker pair. Turn the stereo up and check for a couple of volts fluctuating with the beat. I used a volt meter to check for polarity when I changed out the el-cheapo's for a set of Infinities.

Also, I thought high idle was available with the standards and would disengage with the push of a clutch or brake peddle no different than cruise control. I'm trying to imagine what the safety hazard would be.


Yes, I agree, Hannibal. My investigation through other diesel truck forums confirms that a manual shift Dodge truck CAN have the high idle feature enabled. The safety factor applies in that it's possible to disengage the clutch, put the tranny in gear and drive away with the high idle still engaged. The dealer is supposed to add a switch to the clutch pedal that will automatically disengage the high idle when the pedal is depressed. All this costs about $300-400...a little too much for a few dollars in parts and a short installation time. Besides, if you push on the brake pedal BEFORE the clutch pedal (which most of us do, I assume), then that action will automatically disengage the cruise control and, therefor, the high idle feature. So, there's really no big safety factor here. But of course the manufacturer must cover all bases to be legally safe.

So, my next step is to locate that green wire (this wire would normally go to the safety switch) somewhere in the large wiring harness near the "mystery plug" and bring that wire to ground.


Here's a link to another site that goes over how to enable the high idle function for your truck. It gives part #'s for the clutch switch that can be purchased from Cummins. You are basically grounding pin #22 of the ECM with the clutch switch and along with the dealer enabling the high idle function you're good to go.
http://www.turbodieselregister.com/forum........cussions/153841-high-idle-06-manual.html
Rich


'09 Dodge/Cummins 6.7 3500 Quad Cab DRW SLT Laramie Auto, Timbrens & Overload Bump Stop Spacers; Tork Lift Super Hitch, Tiedowns and Fastguns, ExtremeAir 12 Volt Air Compressor
'04 Arctic Fox 990; 91 Jeep Wrangler ARB's TeraLow 4.5" Rubicon Express Lift

Retired_nuke_ET

Carrollton Va.

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Posted: 11/28/08 10:04pm Link  |  Print  |  Notify Moderator

CumminsDriver wrote:

Here's a link to another site...


Unfortunately unless you are a TDR member, you can only see the initial post from the thread.

dodge guy

Bartlett IL

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Joined: 03/23/2004

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Posted: 11/29/08 07:01am Link  |  Print  |  Notify Moderator

mr. ed wrote:

Hannibal wrote:

Possible lead for a dash speaker? No voltage makes me think maybe a speaker pair. Turn the stereo up and check for a couple of volts fluctuating with the beat. I used a volt meter to check for polarity when I changed out the el-cheapo's for a set of Infinities.

Also, I thought high idle was available with the standards and would disengage with the push of a clutch or brake peddle no different than cruise control. I'm trying to imagine what the safety hazard would be.


Yes, I agree, Hannibal. My investigation through other diesel truck forums confirms that a manual shift Dodge truck CAN have the high idle feature enabled. The safety factor applies in that it's possible to disengage the clutch, put the tranny in gear and drive away with the high idle still engaged. The dealer is supposed to add a switch to the clutch pedal that will automatically disengage the high idle when the pedal is depressed. All this costs about $300-400...a little too much for a few dollars in parts and a short installation time. Besides, if you push on the brake pedal BEFORE the clutch pedal (which most of us do, I assume), then that action will automatically disengage the cruise control and, therefor, the high idle feature. So, there's really no big safety factor here. But of course the manufacturer must cover all bases to be legally safe.

So, my next step is to locate that green wire (this wire would normally go to the safety switch) somewhere in the large wiring harness near the "mystery plug" and bring that wire to ground.


Did you see my previous post a page or 2 back? the plug is for power adjustable pedals! also check someone elses pic of the same plug with the same colors plugged in to the adjustable pedals.

Oops, never mind. I see your talking about the high idle now.


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