CHeck to be sure the brake light switch is adjusted properly as this will turn off the cruise control. I would think the wipers should only come on with the key in on position. Look for loose connections also. Good luck and let us know what you find.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7