Hello folks. I bought a ford 7700 that use to be a txdot truck and it has dual fuel. I recently had the misfortune of mice getting under the hood and chewing up the wire to my knock sensor as well as some vacuum lines. Actually Im still finding other places they have been chewing as i trace the wiring out. Anyway I am looking for some help with removal of all CNG equipment from this vehicle. I am well underway and figured it would be as simple as trace snip and splice BUTTTTTT that is not turning out to be the case. I have one plug that went to the cng "brain" box that has a loom that spreads over to the drivers side of the truck. That loom has the wiring for the gas/cng switch in the dash and then ends up connecting to two wires that are cut from the cab bulkhead wiring penetrations.
When I trace back the other direction, there are two connectors that went to the "brain" and that ends up being several wires split between two plugs. I have checked this wiring for reference on my 2003 f150 4.6 and my sons 1998 f150 5.4. Neither of those trucks are the same as my 7700. Is the wiring for a 7700 completely different from the factory? I want to make it 100% gas with no cng wire, plug, or whatever left in this vehicle. Can someone point me in the right direction for wiring?
Also, I have no use for any of this junk i am removing so if anyone is interested in the dual fuel injectors/fuel rail etc then please contact me. The txdot guy told me the brain was dead on this truck and it would run on cng again if I bought a 1000.00 box. i had no interest in messing with that but after some searches, i see that some of you folks out there like this stuff. I have no use for it.
TIA.

Mickey

 

Nevermind. I was able to wash the wires and put my glasses on and get it spliced back to factory. Be gone CNG!!!

 

I have an 03 7700 that was dual fuel with propane. The 5.4 locked up, I think the guy I bought it from tried to go 4 wheeling (it is 2WD) and got stuck then blew up the engine trying to get it out. Now it is a long term V10 swap project. It didn't start out to be long term, it has just turned out that way.
I also have a 2002 7700 gas only. Same deal, bought it with the 5.4 engine locked up. I actually bought it to use for a "pattern" for the other one since the 02 is still complete and the 03 had been monkeyed with before I got it. Not sure what I will eventually do with the 2nd one.