TheSamba.com :: View topic

Mon Dec 08, 2008 6:30 pm

I have a couple posts on this issue and still don't know what the H is going on. Here's where I am...

Stripped electrical down to ignition only.
- Ground battery to chassis
- Battery to starter
- Battery to B+ on regulator
- B+ on regulator to ignition
- Ignition to fuse for generator light
- Generator light to 61 on regulator
- D+ on regulator to D+ on generator
- DF on regulator to DF on generator
- Ground (D-) on regulator to generator case

When i turn the ignition on, the generator spins in a clockwise motion. Power is being sent down the D+ wire from the regulator to the generator.

I have polarized by grounding DF on generator to chassis (as well as to the generator case) then touched D+ on generator to + on battery. The generator spins just like it does when the ignition is turned on.

I have put in a new regulator and same situation, generator spins like a motor.

I have been rebuilding this for three months and it's my first project so I am green and have heard different messages.

Should power be going from the regulator to the generator along the D+ wire???

If yes, then how do I get my generator not to run when it gets power on the D+???

I'm thinking that if I polarize in reverse, this may solve the issue??? That would be + from battery to DF and ground D+???

I'm going insane!!!

Mon Dec 08, 2008 7:31 pm

No way should power be fed from the regulator to the generator via the D+ wire. The regulator is supposed to shut that off.
So either you have:
Had two regulators with same stuck points inside.
Somewhere you have a wire misconnected.

BTW best not to just keep posting seperate forums on the same problem. Instead post to the first one you already started.

Mon Dec 08, 2008 8:35 pm

So now power down the D+ wire from the regulator to the generator because this is exactly what's going on. I guess I'll exchange the regulator and see if that's it.

Can I test it outside the ignition system first? So if I connect the D+, DF, and D- wires to the gen and regulator, then simply add battery power to the 61 term on the regulator to simulate the dash light? The D+ wire shouldn't send any power then.

Mon Dec 08, 2008 8:36 pm

Yes, that should do it.

Mon Dec 08, 2008 10:58 pm

So here's yet another head scratcher in this saga. I put in the new regulator and the direction said to poloraize by using a jumper wire between the B+ and 61 (or D+) terminals. I have already polarized the generator as most of the posts here have said. Seeing as I was still having the problem I followed the regulator instructions.

I jumped B+ and 61, got a spark. Now when I turn the key on, nothing. No power anywhere. If I remove the positive cable from the battery and then put it back on, the ignition switch works again, but still getting power down the D+ wire to the generator.

Here's another little bit of info. If I remove the wires from the generator and turn the ignition switch, dash light comes on, still have power to the D+. But when I turn the ignition switch off, the power dosen't shut off. I have to remove the positive cable from the battery.

Like I said, all my other electrical is disconnected. I have the ignition system isolated so it's just the battery, the ignition switch, the dash light, and the regulator.

Tue Dec 09, 2008 4:54 am

DAMN it, I wish people would quit "polarizing" the regulator. There is nothing it it that needs magnetized.
And polarizing the generator is not needed if it is running like a motor. It is polarized if it is running that way.

You have something wrong at the regulator, or a short in the wire harness between the regulator and the generator.
You should not have any power at the D+ with the engine not running.
Dis connect the D+ at the regulator, and see if you have power on that wire at the generator. if you do, you have a short in the harness. If you don't, then you have a problem at or in the regulator.
Does it do this with the key off. if it does, then it is probably the regulator. Is the regulator a genuine Bosch??

Tue Dec 09, 2008 7:15 am

Merling wrote: I have a couple posts on this issue and still don't know what the H is going on. Here's where I am...
If you are have already made a few posts, please use one of those posts, don't keep starting new ones.

Tue Nov 10, 2009 12:22 pm

Yes it's been a while, but somone sent me a message if I had resolved this and I did so figured I should close this out...

It was a wiring issue. I have the street works wiring kit and I had power going directly to the gen and oil lights instead of having power going to the speedo itself (that connection at the bottom of the speedo that hooks into the gen, oil, and turn signal lights). I had a ground wire going to that speedo connection. I removed the hot wires from the gen and oil lights so the wires started at the lights and went directly to the regular and oil switch. I then put a hot wire on the speedo and that solved it.