First post here, I just did mine yesterday, took about 15 minutes including soldering. I used the yellow/green stripe wire. Under the steering column they are all labeled, PTO is the one I used, to #3 switch which is labeled also, stripped them, twisted them together, and added a little solder and black elect. tape. Started truck and flipped the switch and 1200rpm's. Works great every time.

Caprang,

No resistor of any kind and it works great.

Right, 1200rpm is the default setting for the PTO hook-up. It also overrides any regen functions, when hooked to the BCP wire that doesn't happen.

Y/G wire direct to switch 1200rpm works flawlessly I use mine for extended idle to run AC in the summer. No resistor necessary.

just hooked mine up....tight access...don't forget to push the ebrake cause i did and thought mine wouldn't work...came back read some threads and presto 1200 rpms....thanks to all who posted

I switched mine around today from the BCP to PTO wire. My 07 worked good on BCP with a 1200 minimum but my 09 has a 900 minimum on BCP for some reason. With the PTO wire I have 1200 rpm now.

It has nothing to do with dual or single alternators, it has everything to do with when the vehicle was manufactured and what strategy is programmed into the PCM.

Starting with vehicles manufactured on or after 11/06/2007, the BCP strategy was changed on all F250-F550 trucks to ramp base idle up to 900 RPM with BCP engaged, and then if charging demands require it the idle can be ramped up to 2400 RPM by the PCM.

The E250-E450 vans still ramp up to a base idle of 1200 RPM with the BCP engaged. This difference is more than likely related to the fact that the E-series vans are used as a platform to build ambulances.

The original QVM bulletin i posted back on the first page (post #3) was Q-162 dated 07/16/2007, it was revised to Q-162R1 on 11/06/2007 to coincide with the BCP PCM strategy change implemented from that date forward. Q-162 & Q-162R1 are the SEIC strategies for 2008 MY F250-F550 & E250-E350. If your 2008 MY was built prior to 11/06/2007 and it has never been to the dealer to have the PCM reflashed then the original strategy of Q-162 will be in place. See page 6 of all bulletins

QVM Bulletin: Q-162 www.fleet.ford.com/truckbbas/non-html/Q162.pdf

QVM Bulletin: Q-162R1 www.fleet.ford.com/truckbbas/non-html/Q162R1.pdf

For 2009 MY F250-F550 & E250-E450 refer to bullein Q-173 for the proper SEIC strategy.

QVM Bulletin: Q-173 www.fleet.ford.com/truckbbas/non-html/Q173.pdf

Older threads & bulletins are a fine starting point but, FCM routinely makes running changes and so the latest QVM Bulletins must be referenced for proper operation.

Thanks I knew eventually someone who have the answer.

Yeh I am going to change mine to the PTO wire also. Mine is a Job3 08 and it only revs to 900 on the BCP. Good to see Blackhat back , that guy has a ton of great information. Thanks Blackhat!

You rock blackhat. Rep points your way. Sounds like once all the Job 1 and 2 trucks get the new flash they will probably have to go the PTO route too. Great info. Thanks!

Hey guys, someone had a link for aftermarket upfitter switches on this site and I can no longer locate it. I do not have the upfitter switches in my truck and instead have a coin holder. This link had the switches for the 2008 reasonably priced, much less than ford which isn't hard to do. If anyone can help me locate them it would be greatly appriciated. Dave.

Here is the link to powerstroke shop Your Premiere Source for Ford Truck Parts and Accessories

Very easy install. It comes with instructions but if you need to see them before making a purchase you can click on this link. https://www.fleet.ford.com/truckbbas/non-html/Q157.pdf

Thanks caprang, I'll order that tomorrow

What's the deal with using switch #3? Any particular reason?

It has a lower current rating than some of the other switches. So most save the other switches for accessories that require more power. You can use any switch you choose though.