the pager motor fix the coin cell also.
after fixing the coin cell take the motor wires and connect it to the positive side and negative side to the coin cell.
i made one of these for my sister a few years back. they are so much fun! indicated by (b) shown in the figure.
3. drill the 4 locations indicated by (c) shown in the figure, then remove the part of trunk floor panel.
4. drill the 8 locations indicated by (d) shown in the figure.
5. remove the rear side frame. 