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Hello David. All of the 2-1/4" or 2-1/2" long 9/16" wheel studs we offer have a knurl diameter of .68, such at the Kodiak Wheel Bolt #K916WB25. We do not have anything with a knurl size of .60 or .62. We do have some…

Hello Pat. The Replacement Trailer Hub Wheel Stud #RG03-080 has a .545" knurl diameter. The distance from the cap to the threads is 1-3/16".

You're already on the right track with everything you looked at. Your 2018 Thor ACE 30.3 has a GVWR of 18,000 lbs so I recommend the following: -Roadmaster Exact Center Steering Stabilizer w/ Custom Brackets for Class A Motorhomes #RM33RR…

Hello John. The Hot Dot LEDs #328-003-17A you were looking at are definitely a good option. Especially is you need something with the 2" center on center for the holes. We do have two other options for you to look at, take a look at the…

The Trailer Hub and Drum Assembly part #AKHD-545-35-EZ-K would be an excellent replacement for a Tru-Ryde Hub/Drum RVD-H-545. Then for new brakes, I recommend the Hydraulic Trailer Brake Kit part #AKFBBRK-35.

The Roadmaster Nighthawk tow bar part #RM-676 is a great option for a tow bar for your 2022 Jeep Wrangler 4xe but you will need to install a base plate kit on your Jeep. For that you'd want the Roadmaster Direct Connect part #RM-521453-5 and that…

The TST TPMS for RVs part #TST-507-FT-6-C is what I recommend using to monitor the tire pressures on both the motorhome and towed vehicle. This system uses the flow-through sensors which will be best because motorhomes usually have valve stem…

When installing the SMI Air Force One Supplemental Braking System For Motor Homes with Air Brakes #SM99243 you will need to find the supply air line and the metered air line on the motorhome. On the Monoco Knight 34foot Road master chassis 2003 model…

To determine if your motorhome has the Tiffin air brake setup or Freightliner BrakeSync you'll need to look at the rear and see if there's an quick disconnect fitting for your air line. The standard Tiffin air coupler fitting would look like…

The instructions for installing the air line on your Holiday Rambler Neptune from the Roadmaster BrakeMaster, like part #RM-9160, is fairly extensive but if you check out page 10 of the linked instructions for the BrakeMaster you can see that the…

For a 2019 Ford F-53 chassis you would need the Roadmaster Rear Anti-Sway Bar #RM25VR for the rear and the Roadmaster Front Anti-Sway Bar #RM-1139-148 for the front. Anti-sway bars are not all the same diameter. For the most part the Roadmaster bars…

I attached a picture with circuit functions labelled on the 7-way picture you submitted. I also attached a picture of a 7-way diagram as well.