Recommended modifications?

Cal, if I were to use a charge wire, I would use a method simular to yours.

Wayne

Solenoid is more foolproof.

On my S&S I added a cutout switch for the truck charge wire just inside the undersink cabinet and just got in the habit of turning it off when parked and on when driving. Had a checklist.

Your truck is already overkill for that camper (which is great, you’ll hardly know it’s even on there).
Other than installing tie downs you don’t really need anything.
Rubber horse mats, cut into manageable pieces as mentioned will go a long way toward keeping it from moving around, provide a bit more clearance over your cab roof, and if you have 5th wheel rails in your truck bed they’ll level things up.
Isolating the truck batteries when parked camping is as simple as yanking the camper plug.
One little dummy-proofing mod I like to do is install a small LED on the front of the camper where I can see it, wired to the running light circuit in the camper.
That way I can tell while driving if I remembered to plug the light cord back in.

SidecarFlip wrote:
Basically nothing. You already have enough truck for the unit. Just tie downs of your choice.

Exactly
(and a hd charge circuit, imo.)

SidecarFlip, my intent was to give the OP something to relate to, that is why I noted the weight of my TC.

On the subject of the charge wire, my preference is t never use the truck to charge the TC battery. I installed a toggle switch on my TC years ago as a disconnect, which does allow me to change my mind. I am of the belief that with the TC setup to function off grid (solar & generator) there is no benefit to compromise my truck's electrical system in any manor. It has worked well for me since 2004 on my current TC. Just my preference.

As a rule, I most always unplug my TC from the truck when I'm parked somewhere (camping) anyway. The Bargman plug is in the front within easy reach on my unit. Not always but most times I do.

Most Fords came with a fuse and relay for the trailer/camper charge wire. GM and Dodge now Ram do not have a relay it is hot all the time.
As stated before I would insure that you install a circuit breaker, relay and larger wire to charge the camper battery.
It would be a thirty amp circuit breaker and somewhere around # 6 multi-strand wire (not building wire).
A Larger ground wire attached to the frame near the cmpaer would serve you very well.
If no isolation is installed you could drain your trucks battery and leave you stranded.

I would suggest looking at the Torklift tie downs with Fastgun turnbuckles.
Relay would be one controlled by the ignition switch "hot" in "run".

Reddog1 wrote:
My truck is pretty much the same as yours. Mine is an auto with the same gears. I do not have an exhaust brake. I am the third owner of my '04. The previous owner installed Stableloads. My 4000 lb Bigfoot TC does put the overloads in contact with the Stableloads. I probably would do fine without the Stableloads but my preference is minimal rear sag.

I installed airbags when I got the truck. So far, they have been a waste of money. In the future I may tow heavy while hauling the TC, then I will appreciate the airbags.

My '04 did not have an anti sway bar. I was fine with it, but the wife was not. The sway bar does make a noticeable difference. I think it is something you can add later if your truck does not have one.

I used 3/4" thick horse stall mats cut in approx 12" wide strips to allow my TC to go over my 5th wheel rails. They are heavy enough they will not blow out when I haul my 5th wheel, yet small enough I can remove them if I choose to do so.

Wayne

Wayne, your 'Largefoot' (pun intended) weighs at least a third again as much as his proposed pop up TC. I personally think he will be fine with just the stock suspension on a 35 series pickup.

My truck is pretty much the same as yours. Mine is an auto with the same gears. I do not have an exhaust brake. I am the third owner of my '04. The previous owner installed Stableloads. My 4000 lb Bigfoot TC does put the overloads in contact with the Stableloads. I probably would do fine without the Stableloads but my preference is minimal rear sag.

I installed airbags when I got the truck. So far, they have been a waste of money. In the future I may tow heavy while hauling the TC, then I will appreciate the airbags.

My '04 did not have an anti sway bar. I was fine with it, but the wife was not. The sway bar does make a noticeable difference. I think it is something you can add later if your truck does not have one.

I used 3/4" thick horse stall mats cut in approx 12" wide strips to allow my TC to go over my 5th wheel rails. They are heavy enough they will not blow out when I haul my 5th wheel, yet small enough I can remove them if I choose to do so.

Wayne