it does just exactly that - it raises the idle speed for things such as quicker warm ups on a MN cold night, helps jump start another vehicle, provides extra current for a converter ie 12v to 120v and many more needs, but the most important thing it is real cool to do. Some have even tied it into their remote starters as well.
It's a cheap simple install that warms up your truck faster. It might come in handy in MN. I'm in Upper Michigan and its nice to hit the remote start and then trunk release button (which I hooked up the high idle to) while eating breakfast and come out to a warm truck. If you decide to do it and have any questions there's plenty of people here (including myself) that'll help ya.
I followed Kennedy's detailed instructions which were for a 01-02 truck and had no problems with my '03. I think the only real difference was the ECM connector color if I remember right. They are labeled though so you can figure it out from there. Other than that it's pretty straight forward. Edited by: Minn-Kota
Look under the "Do it Yourself and Useful Articles" section. Station10fd posted some excellent pictures of a High Idle install.
His truck is a 03 and he didn't report any problems. Hoot also provides a link to the instructions originally posted @TDP by mdrag. I hope to complete my install this weekend. The pictures are already a help. It's nice to see what things look like before you start.
I've heard that the lead to the ecm "c71" is present on the pto connector that resides behind where the pto switch would be. i've found the connector but don't know if this is true and if it is what color wire? This would be much handier for the install if you don't have to remove the tcm and ecm and run the wire in. Anyone know about this ? Thanks in advance!
Not exactly. You're correct that the connector is there and it has the light green wire that should be run to C71. However, that wire terminates at another connector (C106) located on the front of the under hood fuse block. You'll still need to connect that wire to C71.
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