Detailed Breakdown of the Hopkins 7-Way RV Style Connector with Molded Cable Video

I confirmed with Timbren that the #TDR5500 is indeed the correct suspension enhancement spring for your 2015 Ram 5500 Cab and Chassis. The contents of the kit are designed for the stop over the axle as seen in the attached diagram. This kit includes…

I recommend going with the Timbren Rear Suspension Enhancement System #TFR350SDF. Even though the TorkLift StableLoad Suspension Upgrade for Upper Overload Springs #TLA7200 that you referenced are a good option, the Timbren system does a better job…

The Curt Replacement OEM USCAR Trailer Connector #C42JR will work if you still have the US CAR Connector on your 1999 Dodge Ram Pickup. If you're needing to connect this to a square style connector then the only option we have is the tee-in…

You could indeed use both at the same time if you cared to, as they would fit but it isn't necessary. I'd recommend going with the Timbren #TGMRCK15S only, as that kit offers 8600 lbs of capacity which is plenty. This kit isn't compatible…

I have another wheel size that will work, but there are not any hub and drum assemblies for your 3500lb axle that will work with 10" wheels. For 3500lb axles you need 10" braking assemblies #AKEBRK-35-SA and 10" hub and drum assemblies…

I found the article you mentioned from Timbren and a 1 inch gap is recommended for the rear kits but for the front kits they recommend no gap at all. Since the part #TGMFK25D is a front kit you'd want to not have any gap at all.

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

Yes, the Hopkins 5th Wheel 7-Way Wiring Kit part #HM41158 does fit your 2003 Ford F-250 and will work great. This plugs inline with your current 7-way to give you an additional one to install up in your truck bed.

The Hopkins Endurance 5th Wheel/Gooseneck Wiring Harness will connect on any vehicle that has a standard round U.S. Car type connector at the back of its 7-way. The linked photo shows the connectors on this part which plug in between the OEM harness…

Timbren likes to recommend 1 inch between the axle and the Timbren when the truck is unloaded. We have found that this works the best. This allows the suspension to feel when the vehicle is unloaded and still gives you support when needed when…

The Loadstar ST175/80D13 Bias Trailer Tire with 13" Aluminum Wheel #AM3S158 that you referenced weighs 28 lbs. For comparison, the part #AM31990 is same tire mounted on a steel wheel that weighs 32 lbs.

The center pin of a 7-way is typically used as the reverse light circuit. Not every trailer towing setup requires this circuit to be active so in a lot of cases we see this circuit left unconnected. I attached a diagram of a 7-way for you to check…