Many kuddos to the numerous dedicated folks documenting their experiments and adventures. For a newbie, it's more help than one can imagine.
I'm in process of updating my '85 Scamp
16 foot. Among other scamp
projects, this one involved replacing the clearance markers with LED, since the originals were getting too corroded and unreliable. The PO also had some make shift tail lights
drilled into the back. It was an eye-sore. Thus, the tail lights
were also replaced with round LED. I love the look of the updated round tail lights
Unfortunately, this left my options for mounting the license
plate in the back somewhat limited and awkward. I searched and searched for some "clean" solutions to this dilemma, not wanting to drill any more holes in the fiberglass and wanting to prevent the plate from flopping against the fiberglass on the highway. Eventually I got the idea stuck in my head to mount the license
plate to the bumper via magnet. It could be removed or relocated easily, was very sturdy, and was cost competitive with many of the custom replacements on the market that were far less suited for this application (and plastic). My solution may be a bit over-designed, but I'm happy with the result so far. In two weeks I'll have some field experience to see how the magnet holds up, but I think it'll do fine on the road (could always add a second magnet).
For electricity I wrapped the wire around the base of the magnet so I've got enough extra length external to be flexible with the location, then drilled a small hole in the floor, ran the wires up to the tail lights
for power, bundled the extra wire internal, then epoxied the pinhole.
Overall rough cost -
$5 90lb rated magnet at harbor freight
$8 steel backplate from lowes
$4 steel right angle from lowes
$0 steel channel (re-used from old shelving)
$10 auto LED strip from walmart (really $20 since it was a 2 pack, I plan to mount the other under the door for step lighting)
$6 Black license
plate frame from walmart
$3 Automotive primer spray paint
$3 Automotive black spray paint
$2 Stainless steel license plate screws at walmart
$2 Stainless steel hardware from menards
Overall Time -
A few hours plus or minus paint
drying. The license plate and frame cover most of it, so none of the dimensions really had to be exact!