for the past few years i have been swapping out old parts even though they are not bad. I remember i replaced the voltage regulator (non Bosch brand) and also the OVP about 2 years ago. I checked the fuses on the OVP this morning and they were OK. All battery cables were nice and tight. When i get home today, i will check the battery voltage. Thank you so much everyone for helping me out. I have done a lot of fixing on this car and would like to have it running well. Just recently i changed the two front brake, new radiator, new two front struts and strut mounts, new power steering pump. I cant give up now.