How to Fix RV Rear Brake Lights and Hazards Not Working - Common Grounds & Connections
Rear brake lights and hazards out often common ground or connector issue. Check grounds at rear lights and chassis-coach junction.
Rear brake lights and hazards out often common ground or connector issue. Check grounds at rear lights and chassis-coach junction.
The ultimate guide to Ford F53 chassis ownership covering everything from routine maintenance to advanced troubleshooting. Learn about common issues, upgrade options, and keep your motorhome running reliably.
Turbocharging V10 is technically possible but impractical. Cost of $10-20K+, risk of engine damage, and complexity make it poor value. Better to buy a diesel pusher.
For Ford F53 chassis, look for existing rubber grommets near the brake pedal assembly or steering column area. You can also use the main harness grommet where factory wiring passes through the firewall.
$1400 for Triton V10 AC evaporator, dryer, and expansion valve is a fair price. Parts are $300-500, and 8 hours labor at shop rates is accurate for this dash-intensive repair.
Key issue is only 3.3V at fuel pump relay trigger instead of 12V. This prevents relay activation. Trace the wire feeding relay pin 86 to find voltage drop. Check for bad connections, corroded grounds, or damaged wiring between power source and relay.
Your Ford F53 no-spark issue is likely caused by a faulty distributor pickup coil, damaged wiring harness, or defective ignition control module connections. Check the pickup coil resistance and inspect all ground connections first.
When RV leveling jacks have no power, check the main disconnect breaker, battery connections, and hidden fuses in the engine bay or basement compartments. Battery polarity issues are rare but can cause system failures.
For Cummins 6.7 ISB, use AGM Group 31 batteries with 900+ CCA. Duracell (East Penn) and NAPA Legend are both excellent choices with good warranty. Replace both batteries together. AGM handles diesel starting demands better than flooded.
P0339 on 7.3 Godzilla is intermittent crank sensor signal. Since clearing fixed it, monitor for recurrence. Likely sensor beginning to fail - should be warranty covered at 27K miles.
For the Jamboree fridge, check LP gas flow, burner for debris, and 12V power. Ford 460 EFI conversion costs more than the RV is worth - maintain the carburetor instead.
Check inertia switch first on 1994 Ford 460 - this cuts fuel pump power after impact and has reset button. Usually on drivers side kick panel. Also check fuel pump relay by swapping with similar relay. Do not rely on jumper wire long-term.
Cummins in RVs are diesel engines or Onan generators. Gas chassis use Ford or GM. Cummins diesel and Onan generators need regular maintenance.
2006 F53 trans dipstick on passenger side of transmission. Check with engine running and warm. Use Mercon LV fluid.
The electrical manual for your 2007 Dyna Max IE250's Dyna Air Ride suspension is typically found through Monaco Coach Group archives or specialty RV parts dealers, as this was a premium system installed on select Dyna models.