MARKER LIGHTS

[Len Silva]

The maintenance manual for my 4104 referred to them as Michigan Markers".

[belfert]

If you do add reflectors as Sean suggested I would get the tape style reflectors instead of stick on or screw on reflectors.

I personally like the Truck-Lite flat tape reflectors made with 3M material.  They should be available at any heavy truck dealer or parts place that carries Truck-Lite, or even NAPA I bet.  Peterson also makes some reflectors that are flat metal that don't look like much, but they reflect light like crazy.  The Peterson reflectors are sold all over and maybe even Walmart.  A lot of places that carry trailer lights have them.