High Idle Mod ????
New User
Joined: Dec 2009
Posts: 5
Likes: 0
From: valley view pa
OK, I was looking at hooking a switch up this weekend for high idle in my 06. i will mainly use it for the warm up use in cold weather, however there are time when i would want to use it for recharging the batt in the trailer. Which way would you guys recomend?? i was going to go with the mod that varried the RPM's based on the draw of electricity. What are the pros and cons of each before i make up my mind... 
now i wish i would have got the upfitters from the start
one day i will get it all right, then Ill go buy a new one again!! thanks
now i wish i would have got the upfitters from the start
one day i will get it all right, then Ill go buy a new one again!! thanks
Hotshot
Joined: Aug 2006
Posts: 17,398
Likes: 317
From: Whittier, CA
OK, I was looking at hooking a switch up this weekend for high idle in my 06. i will mainly use it for the warm up use in cold weather, however there are time when i would want to use it for recharging the batt in the trailer. Which way would you guys recomend?? i was going to go with the mod that varried the RPM's based on the draw of electricity. What are the pros and cons of each before i make up my mind...
now i wish i would have got the upfitters from the start one day i will get it all right, then Ill go buy a new one again!! thanks
now i wish i would have got the upfitters from the start
one day i will get it all right, then Ill go buy a new one again!! thanksIt's really not a big deal which one you choose. It's about a 5 minute job to change your mind and connect the other wire.
New User
Joined: Dec 2009
Posts: 5
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From: valley view pa
If you used the solid Orange wire, then you used the SEIC input wire. You just didn't go on to install the resistor, so you only get the 1,200 rpm. With the resistor installed you could choose any rpm you wanted, up to 2,400. Your method also locks the torque converter, so that power takeoff applications could be used. Nothing wrong with doing it that way, it's just one of the options.
The BCP wire is purple with light green stripe and just gives a solid 1,200 RPM, unless you are drawing more electrical current than the alternator can provide, at which point it will automatically ramp up higher. But you might not ever see that happen in normal use unless you have a big inverter or something using power. You might also see the increased rpm's if you jump start someone. This method does NOT lock the torque converter, since it is not intended to support power takeoff.
The OP asked how to choose, and that is it in a nutshell.
The BCP wire is purple with light green stripe and just gives a solid 1,200 RPM, unless you are drawing more electrical current than the alternator can provide, at which point it will automatically ramp up higher. But you might not ever see that happen in normal use unless you have a big inverter or something using power. You might also see the increased rpm's if you jump start someone. This method does NOT lock the torque converter, since it is not intended to support power takeoff.
The OP asked how to choose, and that is it in a nutshell.
from what i re read on your post#12 i would want to use the BCP hook up, i never knew you could turn the seic hook up into a variable hook up with a little extra work. the BCP hook up changes per need of the truck the SEIC is changable with a little extra stuff??? Thanks I think i am more clear on this now if not i am sure you and the others here can get me where i am trying to go!
Hotshot
Joined: Aug 2006
Posts: 17,398
Likes: 317
From: Whittier, CA
ok i knew you were talking about the 2 different choices but i was unsure when you said about having the resistor installed... is there a need to hook up something separate that i am missing or was i thinking the right thing the whole time?? also how do you select your RPM am i think to hard about this? as far as i knew you had 2 choices and all you had to do is pick the wire depending on the desired affect.
from what i re read on your post#12 i would want to use the BCP hook up, i never knew you could turn the seic hook up into a variable hook up with a little extra work. the BCP hook up changes per need of the truck the SEIC is changable with a little extra stuff??? Thanks I think i am more clear on this now if not i am sure you and the others here can get me where i am trying to go!
from what i re read on your post#12 i would want to use the BCP hook up, i never knew you could turn the seic hook up into a variable hook up with a little extra work. the BCP hook up changes per need of the truck the SEIC is changable with a little extra stuff??? Thanks I think i am more clear on this now if not i am sure you and the others here can get me where i am trying to go!
But for informational purposes, if you choose to use the SEIC wire, you can use another wire to install either a fixed resistor, or a variable potentiometer to set whatever RPM you want between 1,200 and 2,400. This document explains how, and has a chart to tell you what resistance value gives for RPM value. https://www.fleet.ford.com/truckbbas/non-html/Q108.pdf Notice on the chart it shows "open circuit" gives 1,200 RPM. That's what you would be doing if you used the SEIC wire and did NOT install a resistor.
I should add, the above is for automatic transmission trucks, 2005 -2007. If you have a manual transmission, a resistor is mandatory to make it work.
Last edited by bpounds; Dec 10, 2009 at 10:03 AM. Reason: added last paragraph
Senior User
Joined: Aug 2007
Posts: 155
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From: Ontario, Canada
For an '05, you want to use this how-to guide:
TheDieselStop.Com - www.thedieselstop.com
Purple wire with light green stripe.
TheDieselStop.Com - www.thedieselstop.com
Purple wire with light green stripe.
New User
Joined: Dec 2009
Posts: 5
Likes: 0
From: valley view pa
ALL DONE!! I did the BCP hook up and besides having big hands that was a 10 minute job... I really wish I would have donr that long ago! Thanks everyone who helped! the only thing i didn't do is hook up the rv to see if the RPM's go up with more draw but i am sure it will be fine! 
Thread Starter
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Senior User
Joined: Nov 2009
Posts: 172
Likes: 0
Thanks guys! completed it this morning and it works like a charm. Took Pounds advice and used the BCP. couldn't done it without ya.
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Posting Guru
Joined: Oct 2009
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From: AZ
hiding behind your underdash fuse box that you unbolt and pull out of the way
didn't it show you? https://www.ford-trucks.com/lc/lc.ph..._idle_mod.html
didn't it show you? https://www.ford-trucks.com/lc/lc.ph..._idle_mod.html
Hotshot
Joined: Aug 2006
Posts: 17,398
Likes: 317
From: Whittier, CA
TheDieselStop.Com - www.thedieselstop.com
Incidentally, on my '06, the wires have labels on them for what they are used for, so you don't have to rely solely on colors.
Hotshot
Joined: Aug 2006
Posts: 17,398
Likes: 317
From: Whittier, CA
