This installation uses two seat width adjustment welded nuts to attach an Adapter Plate 4. The welded nuts accept M8 bolts, which fit in the large holes and wide slots on the Adapter Plate 4. Align a large hole and wide slot on the AP4 with the two weld nuts to determine how to attach it. Orient the AP4 so the threaded holes which allow attachment of an L-Angle Extension Plate point to the outside of the frame. If necessary, attach another plate to offset it prior to attaching the L-AE. Using two slightly longer bolts and two M8 nuts, thread one nut down to each of the bolt head. Place the bolts through the Adapter Plate hole and slot to be used. Thread the two remaining nuts on the bolts. Place the AP4 over the welded nuts and tighten the bolts until they secure the leg rest hardware. Once the bolts are tightened, tighten the first set of nuts down to the weld nut. Tighten the second set of nuts (between the AP4 and bolt head) to secure the AP4. Attach the L-AE to the AP4 so the vertical face of the L is outside the frame. An Angle Adjustment plate may be used between the AP4 and L-AE to reorient the L-Angle if needed. Attach the Wheelchair Bracket.