Today I tackled one of the several RV projects I have planned while we're in-between trips.
I've never been impressed with the headlight performance on our motorhome, but it hadn't been a priority since we don't drive it a lot at night, and I hadn't had the time to dig into it. The coach uses headlights from an early 2000s Lincoln LS, and I had initially thought it had HIDs. I knew I was planning on replacing the badly hazed housings, so I hadn't dug into it that deeply.
On our last trip, I got to looking at the lights, and realized it had aftermarket LED bulbs. That explained why the pattern was so poor, and there was no discernible difference between high and low beams. We also dealt with significant rain, and I discovered the fog light performance was pretty poor as well. Just looking at the beam pattern it was apparent that driving beams had been installed as fog beams, and being mounted so low to the ground, they were utterly useless.
When we got home, I started ordering parts: new headlight housings from Headlight Depot, Phillips Silverstar Ultra bulbs and a set of Hella fogs to replace the Hella driving beams. Surprisingly, all the parts were pretty reasonable with everything coming in under $450.
I decided to tackle the fog lights first, and discovered even high-end RVs tend to be put together like crap. The fogs were bolted to a piece of sheet metal that was screwed into plywood with three wood screws. The plywood was glassed into the front exterior of the motorhome.
Once on the bench, the difference in lenses for the fogs and drivers is pretty clear. I flipped the fog assemblies in the housing for pendant mounting, spliced on the harness connections from the old lights, and mounted them on the coach.
I thought the fog light mounting was bad, but the headlights were even worse... wood screws through the housing tabs into plywood... not even flush mounted.
I think if I saw something like that on a new $450k coach, I'd be pretty upset. At least we bought it after 20 years of depreciation...
Once on the bench, the difference is clear (to use a bad pun).
Garbage LED 'bulbs':
Done
Still need to aim everything, which will have to wait for a convenient time after dark. I've had really good results with the Phillips bulbs in the past, so I'm hoping they work well here. This is phase 1 of improving the lighting. Phase 2 will be some actual driving beams, but I will need to do some fabrication to mount those.