I just went a got a couple of the LED amber clearance lights to replace a similar problem lamp.
04 3500 4X4 Auto Cummins QC
Onboard air, Air bags, Pac Brake
05 Cougar 244EFS, Flexair Pin Box, Dexter Equalizers
6x6v, 900watt, 60a Renology MPPT, 2200w Xantrex, 3500w IPower Genset
VA7RKC Advanced
Everything runs on smoke, don't let the smoke out