why do windshield wipers operate only on the high speed setting? on 1995 Mazda B2300

the only way wipers work is on high speed

Asked by for the 1995 Mazda B2300
This can be from a bad switch, or the wiper motor, or the circuitry in between. If you can, get a wiring diagram and a test light and diagnose the circuit, otherwise it's best to let a shop diagnose it to avoid replacing unneeded parts.
You might find a free wiring diagram here: http://bit.ly/autozone_repair_info or go to http://bit.ly/alldata_repair_manuals or http://bit.ly/mitchell_repair_manuals_online and get an online repair manual subscription.
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