I have an '01 elec. manual. Interesting, to say the least -- the diagram for the rear wiper/washer (p. 92) shows an intermittent dwell-time controller (variable resistor) connected to pins 4 (grn/yel wire) and 8 (grn/wht wire) of the "B" connector for the wiper control switches. View 286, p. 202-71, shows both the "A" and "B" connectors, and the "intermittent dwell-time control" is listed there also. When you check out the actual switch lever assembly, however, there are but three positions for the rear wiper -- off, on, and washer on. Looks like the feature was designed-in, but never implemented in production.
Being an engineer, I tend to SWAG (scientific wild a**ed guess) a lot. If those grn/yel and grn/wht wires are actually there, my SWAG says that the intermittent wipers would work just by installing a wiper-control stalk/connector assembly from an '02. Even if those wires aren't there (and I haven't looked under the steering column cover), no scheme to add intermittent control would work without having the control capability in the switch assembly anyway -- including wiper off/on/intermittent/wash, PLUS an intermittent dwell-time adjustment.
In the '01 manual, the only 8-pin sockets shown in the rear wiper wiring diagrams are the A and B connectors mentioned above. Others in that circuit have 6, 12, and 14 pins.