OK... i have a 95 civic with a b18b1 swap with a 0bd1 harness... my alternator stoped working but i went to get it tested and it passed all the tests it worked fine untill the battery light came one idk wtf is going on do i have a wireing issue or somthing or maybe not enough grounds?

 

What is the voltage on the battery while the car is running?

 

when i charge the battery its 12v but since it runs on battery it goes down and down... my friend said he has a ground a his b16a hatch the is from alternator to chassis could this be and issue for me? i changed the wire harness also because i though maybe there was a bad connection or something. and its still doing the same thing that it was before it was running on batterys. maybe my fuses r bad or somthing

 

you need to use a multimeter and make sure all wires are going where they are supposed to... if you need an fsm to see where the wires go, create an account at hondahookup and make sure all signals are going where they should...

 

i c how much would u think this would cost at a shop?