Alternator problem VW Rabbit 77 help!!!!!1

Only if you have a 400Jig-awatt sub.

If you didn't have the alternator tested prior to leaving the store oppsie.

Have you replaced the battery to frame and frame to engine ground? Do it.

I got 4 bad alternators in a row from Napa once.

The big difference between the alternators is that the Motorola style has a Plug on the back side.
The Bosch has 2 studs a big one and a little one. The Big one goes to the battery and the little one goes to the blue wire.

I would also suggest that you tie a ground wire on a Case nut to the Block of the engine.

A new radio needs a Constant b+ 12V to the one yellow wire, and a Switched 12V+ to the REd one.
That way it doesn't drain the battery, and turning the key off stops the radio, the 12V+ constant is for the channel pre-sets.

In the original VW, the red power lead is a constant 12 and should be used on the yellow wire, and the Switched needs to be on the switch for the defroster.

briano1234 said:

Only if you have a 400Jig-awatt sub.

If you didn't have the alternator tested prior to leaving the store oppsie.

Have you replaced the battery to frame and frame to engine ground? Do it.

I got 4 bad alternators in a row from Napa once.

The big difference between the alternators is that the Motorola style has a Plug on the back side.
The Bosch has 2 studs a big one and a little one. The Big one goes to the battery and the little one goes to the blue wire.

I would also suggest that you tie a ground wire on a Case nut to the Block of the engine.

A new radio needs a Constant b+ 12V to the one yellow wire, and a Switched 12V+ to the REd one.
That way it doesn't drain the battery, and turning the key off stops the radio, the 12V+ constant is for the channel pre-sets.

In the original VW, the red power lead is a constant 12 and should be used on the yellow wire, and the Switched needs to be on the switch for the defroster.

Click to expand...

Thanks Briano.
I did not check the alternator in the store BIG OOPPS. i got another 65amp bosch i installed yesterday when to oreilly's today to have them check with the tester they connect into the battery to see if everything was right, they said the voltage regulator was bad again!!! i am thinking I only drove this car once to come here to oreilly's. on my way back i stopped in an auto electrical shop i told them my story they connected they tester and checked the alternator 5 times and it came out good.??????, maybe oreilly's machine is bad??? i don't know???.

for the radio the red cable is connected to the cigaret lighter that someone told me gets power all the time, so should I move that red cable to the defroster switch and that would fix the problem of the radio having power all the time?. sorry this may be a simple thing to do but I am new to cars and electrical work.

I do have to improve my ground from the battery to the frame, now I only have that little skinny cable that come out of the negative cable of the battery. for the improvement do I use a 6 gauge or 4 gauge cable to anywhere into the frame?

thanks again briano!!!!!!1