I just got a new 2011 SD and I am using the upfitters to run wig wag lights. I need these to have power all the time as I work in the city and need to leave the lights flashing and not leave the vehicle running. In prior years I know they had a upfitter relay that I could have just simply bypassed in the battery dsitrubition box. Unfortataly I can not find this and Assume it is using a different realy like the wipers or something. Ford sure seems to make it hard and does not want to let you know which relay it uses.

I would rather have a dead battery then a stolen truck

Thanks

Brian

 

I would like to know the same thing..

 

If u two will send me an email to carltonwebb@gmail.com , I think I can send you the answer to your questions in an attachment. Make sure u say what u want b/c I am bad about skipping names I do not recognize.