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Fifth Wheel Installation - 2006 Dodge Ram

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How to Install a Fifth Wheel Trailer Hitch on a 2006 Dodge Ram


Today on our 2006 Dodge Ram 2500 well be installing the Reese quick install custom base rails with installation kit part #: RP50140-58. Weve already gone ahead and lowered and removed the spare tire. Well begin by detaching the wiring harness here on the inside of our frame. Well pry off the clips from the frame allowing the wiring harness to hang down and out of the way. Well now move into the bed of the truck where well place the rear mounting rail into the bed and using a tape measure well center the rail between the weld seems on the length of the truck. Well also need to make sure that we get the rail the proper distance from the rear edge as indicated in the instructions.

With our rear rail in position well go ahead and mark the holes indicated to us in the instructions that well need to drill out. These two holes here, the center hole toward the rear of the truck and the two holes here on the other side. We use an 1/8 inch drill bit to drill a few pilot holes in the bed of the truck. Please be aware that when drilling holes in the bed of the truck there is a potential risk of vehicle components that are mounted underneath the bed which may or may not damage them. With our pilot holes drilled well move underneath the truck where well loosely install the side brackets.

Were going to go ahead and remove our fender well just to make it easier to gain access. You can see the pilot holes do line up with our bracket holes here on the rear. Now that were sure that our pilot holes line up with our brackets well go ahead, remove the brackets, move back into the bed of the truck and open up the 1/8 inch holes to a 9/16 inch as per the instructions. With our holes open back up well move back underneath the truck where well place the rear brackets on the inside of the frame as shown in the instruction. Well install a U-bolt on each of the two brackets which will wrap around the outside of the frame, right behind the rear support.

Well loosely install the half inch conical tooth washers, making sure that the washers face the bracket and the hex nuts onto the end of the U-bolts. In some cases you may need to temporarily lower your exhaust to gain access to the passenger side rear U-bolt. We did not have to do that. For the driver side rear only well feed in an inch and carriage bolt, a one inch by 3 inch block in the slot on the underside of the frame. Well be using a pull wire to do this.

Theres a round hole on the inside of the frame that can be used to feed the hardware through the frame and into the position. Well loosely fasten the carriage bolt with the half inch conical tooth washer, again, making sure that the teeth of the washer face the bracket and the hex nut. Now that our brackets in position well move back up into the truck where well need to open up the hole here in the front of our rear base rail to an inch and 1/8. Well be using a long pilot bit for our hole saw. When we drill this hole you want to make sure that you only go through the bed floor and not through the hat channel underneath it. Well go ahead and drill our holes out to the inch and an 1/8 where we can now drill the lower hole here in the hat channel out to 9/16. We can then take the spacer sleeve, drop it into the inch and an 1/8 holes on either side where well use the long 4.5 inch carriage bolt to pass through the sleeve down underneath the truck. Well use the half inch by two inch long carriage bolts to pass through the remaining holes in our rail. With all the bolts in position well need to make sure that any other corrugation within the bed is taken up. Well use the U-shaped half-moon style washers to take up that space, making sure that they go around the bolt. Now that we have all our hardware in place here on the top side of the truck well move underneath where we can begin attaching it to the bed of the truck. Well use 1.5 inch by two inch blocks, lock washers and a hex nut. Well go ahead and snug those down by hand. Now that we have our rail end here on the back of the truck well need to install the front rail. To do this well loosely assemble our fifth wheel hitch and use it as a template to install our front rail. With our front rail in place well go ahead and measure to the weld seems just to make sure that the rail is centered in the truck. Now we have our front rail in position. Using the fifth wheel hitch as a guide we can go ahead and mark the holes as indicated in the instructions that well need to drill out. To ensure we dont hit anything vital underneath such as the gas tank weve placed a piece of wood between the tank and bed. Well again use an 1/8 inch pilot bit, drill a small hole in each of the five locations, move underneath the truck and ensure that the holes are in the proper spots. Once weve done that we can now move back into the bed of the truck and open up the 1/8 holes, again, to 9/16 inch holes. Now that we have those holes opened up we place our front rail back into the position where our rail should line up perfectly with the holes. With our front rail in place well now go back underneath the bed and start installing our front brackets. We came across some problems on the driver side with this hanger here. Well temporarily remove it and install the bracket and U-bolt, again, using the conical tooth washer and nut to fasten them. With that loosely installed well reinstall our hanger. Were now ready to put our bolts into place in the front rail. At the brackets under the bed well need to use spacer sleeves again between the bracket and bed. Now well drop our bolts in. Well also need to use the U-shaped spacer blocks with the corrugation both above and underneath the bed. Well then fasten it in place with a conical tooth washer and nut. The rest of the connection points will get a block, lock washer and nut. Now that we have all our hardware in place well move back up to the top and just ensure that our hitch is in and that our rails look good. We can then begin tightening them down to the bed of the truck. Well want to make sure that we tighten the rails down first and then tighten the brackets to the frame. With all our hardware tight well go ahead and torque it to specifications as indicated in the instructions using the same torque procedure as we did tightening it down. With all our hardware torqued we can go ahead and reinstall the inner fender liners, make sure that our wiring harness is secured out of the way which may require the use of some zip ties. With that, thatll complete our installation of the Reese quick install custom base rails and installation kit for fifth wheel trailer hitches part #: RP50140-58 on our 2006 Dodge Ram 2500.


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Info for this part was:

Employee Zack K
Video Edited:
Zack K
Employee Joshua S
Video Edited:
Joshua S
Employee Rick A
Test Fit:
Rick A

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