Results for "tail lights"

Planning to tune my 2018 Ford 6.8L V10 RV but got quoted $800 for professional tuning and wondering if the 5 Star X4 is DIY-friendly. Specifically want to know about real-world performance improvements - does it actually improve throttle response and shift points? What about fuel economy gains?

Which of the 3 programs works best for RV towing? Is the investment worth it for better drivability or just hype? …more

Spent months planning our cross-country trip leaving next week and my RV's rear brake lights and hazards just completely stopped working. My 1998 National Tropical (on a '97 Ford F53 chassis with the trusty 460 V8) has decided to get creative with its lighting situation. The rear brake lights and 4-way hazards have completely given up the ghost - nothing, nada, zero response from the back end. But plot twist: the turn signals work just fine back there, and everything up front (brake lights, hazards, turns) is working perfectly.

I'm scratching my head because if it was a fuse issue, wouldn't ALL the lights be affected? The fact that some work and others don't has me thinking it's something more specific. Any ideas where I should start poking around to solve this electrical mystery? …more

Halfway through prepping for my Texas Class B road test tomorrow, my neighbor insists my unregistered 2011 Thomas Built school bus is fine, the DMV demands current registration, but online converters claim they passed with expired tags.

I really want to use my bus for the test since I know it well and it's got air brakes - definitely want that endorsement! The bus is fully insured and I've got the commercial one-way permit it was driven here on, but I can't get anyone at DPS on the phone to confirm if they'll even let me take the test. Anyone know if Texas DPS will accept a vehicle that's not properly registered yet, or am I setting myself up for a headache? …more

Last week my Workhorse chassis LED tail light upgrade started flickering and the RV tech wants $800 for a complete wiring harness replacement. The original discolored lights were getting hard to see, so the LED upgrade seemed like a smart move, but now I have three main problems that are driving me crazy.

First, my turn signal indicators are flashing extremely slowly - almost like they're struggling to work properly. Second, when I turn on my running lights or tail lights, the indicators stop flashing altogether and just stay on solid, which obviously defeats the purpose of having turn signals. Third, and perhaps most concerning, when I press the brake pedal, my main tail/brake lights actually turn OFF instead of getting brighter, leaving only the center high-mounted brake light working.

I made sure to match the wiring exactly - the stop/tail lights have 3 wires each, and the reverse/indicator lights have 2 wires each, just like the original incandescent bulbs. The connections seem solid and I followed the same wire routing. I'm wondering if this is a common issue with LED conversions on Workhorse chassis, and what specific components or modifications I need to make this work properly. What's the complete solution to fix these LED tail light problems? …more

Manual says to use Tow/Haul mode in the mountains but doesn't mention anything about using it with cruise control. Currently running cruise on the interstate with Tow/Haul off and wondering if I should be using both together. Don't want to damage the transmission doing it wrong. …more

Every time I mention my 2001 Ford E350 RV's cruise control issues with brake light circuit resistance, I feel stupid asking, but why does this keep happening? According to the service manual, I should be reading less than 20 ohms between pin 4 and ground, but my multimeter shows 50 ohms consistently.

The cruise control system monitors the brake light circuit through the light filaments to detect brake application. With this higher-than-spec resistance reading, the cruise control will not engage properly. I've already replaced the brake pedal switch and master cylinder switch, but the resistance remains at 50 ohms when measured at the pedal switch.

What typically causes this excessive resistance in the brake light circuit, and what is the complete wiring path from the brake switch to the rear lights that I need to inspect? The brake lights themselves function normally, but this out-of-spec resistance is preventing cruise control operation. …more

Spent way too much time getting quotes and now I'm staring at $2,800 worth of repairs for my 1996 Newmar Mountain Aire on Ford F530 chassis. Recently, the RV was stored outside and squirrels caused wiring damage, which I've had repaired. Now I'm dealing with a problem where the lights stay on when the transmission goes into reverse. I've already checked the relays and fuses, and been told it might be a faulty reverse sensor, but I can't locate it or find a manual. I need help understanding: 1) What could be causing the reverse lights to stay on (I currently have to remove a relay to turn them off), and 2) Where I might find the reverse sensor on this transmission. Any guidance would be greatly appreciated. …more