I have a 1994 518I BMW with a rebuilt engine 14000 miles. While driving last night windshield wiper stopped, radio and power locks also. I pulled over turned off the engine and car would not start. check the fuses and all were OK. After about 15 minutes the car started and I drove home. The wipers and radio stopped working again but I went home parked and would not start. This morning it started drove 1/4 mile and samething happened. Parked and still will not start. HELP??????????

start with checking power and grounds, good luck!