Finally got my M101A3 set up so I can pull it with My Tremor. Simple work really. Just replaced the light bulbs with 12V ones, put on a flat 4 pin lead and extended the chains. Pulls very well behind a 1/2 ton and I like the surge brakes. Does anyone know how many M101A3s were made? They seem very scarce compared to the A1 and A2s.