Slow wipers & no blower motor in MM

[FMS88]

Measure the voltage to the blower and wiper motor when running. If less than 12v, check and clean the under dash ground points. The listed electronics may share a common ground and if it's poor, it will reduce power to whatever shares that ground point. Also a good idea to clean the negative battery cable where it attaches to the battery, body and block, and the ends of any other ground cables in the engine bay.