The day we were leaving Louisiana (headed towards Houston) we did our normal checks of everything before departure. As previously mentioned we had a pull through site so never unhooked the jeep. But we were checking all the lights and blinkers etc with the walkie talkies and Jane said the right rear blinkers on the coach weren’t working…. Great…. When the right blinkers were turned on they blinked really slow. But the right blinkers on the jeep were working fine so we had some signal for the right rear as well as right side marker light and an LED signal on the RH mirror was still working. I tried a little trouble shooting but bagged it after a while and we decided to get to TX and figure it out there. Of course, when we stopped at the TX welcome center on I-10, a motorcycle cop comes and parks right beside us. But we made it to the Thousand Trails at Lake Conroe in Willis, TX and got everything setup. Then next day I started trouble shooting the issue. first thought was maybe a bad ground to the right rear light unit. But that thought was negated when I realized the (6) parking lights in the right rear light were all working (4 of which are dual filament and also are brake lights).
So I went to the IRV2 forum online in the Newmar owners section and posted the symptoms. You either love or hate forums. Always plenty of trolls there spreading hate & discontent as well as totally useless information, but there are also a lot of cracker jack armchair mechanics and DIY types who aren’t afraid to dive into the bowels of their rigs and get their hands dirty. Got a few replies that weren’t really helpful like “check the ground” (did you not see the picture in my original post that showed the parking lights are working?), but low and behold a relative newcomer to the forum who has a similar coach said: “In the rear basement compartment on the passenger side located on the frame you should find a box with a lot of connections going into it. It has several fuses in it you will probably find the one for that set of brake lights blown. It happens on mine occasionally.” JACKPOT! Here’s what I found in where he described:
After replacing the F4 fuse it all worked again! YEHAA! Or in Texas maybe I should say YEHAW! Finding that fuse probably saved hundreds of dollars at an RV garage in troubleshooting. Thank you IRV2 forum!