I am looking at a 2 owner, 49,000 mile 04 Excursion with the 6.0. I noticed under the hood, on the driver's side, right up in the corner next to the cowl there appeared to be 3-4-5 wires that appeared to have been cut with snips. The wires appear to be factory, were loose, and all led into the factory harness nearby. The seller believed the original owner had a "chip" installed there and had just cut it loose. I was guessing that they all led to some kind of factory connector, but I'm a 7.3 guy and know next to nothing about a 6.0.

Any ideas on what was cut and why?

BTW- There are no check engine lights, and the seller said he bought it in 09 with 33k miles and has not had any issues.

 

They came with spare wires from the factory, I think 4 wires go under the dash to the left of the radio, hope this helps...

 

They are passthrough wires. They are used for installing aftermarket stuff without feeding into the cab. They ussually have black melt on caps on each end. There are also thinner gauge bundles up upfitter switch wires inside if you have the 4 switches? The swithes are pre powered. This has nothing to do with chipping it.

 

They're stowed at the parking brake pedal. Just behind the lower dash/knee board. Might be taped up. Just as mhoefer posted, pass thru wires. Use 'em for whatever you want.