Gen 2 wire problem

[Matt Kahle]

Okay I'm finely working on my cucv so I don't have any gen-2 light when I turn the key in the accessory position. I checked the light bulb which was fine. Here's what I think the problem is. I just replaced the heater switch it didn't work so I replaced it and found out that it was burnt on the brown wire. When I put the new switch in the heater motor worked. Then I checked the gen-2 light still nothing so I got out the wiring diagram. I started at gen-2 I pulled out the voltage regulator and put a ohm meter on the red and brown-white wire's and got nothing. Then I went over to gen-1 and tried the same thing and I got a reading so that worked. Now I have been trying to trace the brown-white wire and I'm having a hard time doing that. So dose any one know of a point on that wire that might burn up? Or maybe there some relay or resister that's bad?

 

[cpf240]

Were the batteries disconnected when the heater switch was replaced? If not, perhaps the voltmeter shorted while removing the instrument panel trim, it is easy to do, and burned out a fusible link for the 24v side of things?

 

[Matt Kahle]

I don't remember But the gen-2 light hasn't work before I replaced the heater switch.

 

[Matt Kahle]

I know there's a few brown wire's. Is there a fusible link along the gen-2 brown wire? I really think something burnt out along the line.

 

[Warthog]

Have you checked the very bottom fuse 24v fuse? Is your voltmeter working?

 

[Matt Kahle]

I don't have a volt meter and I did replace the 24v fuse awhile back and I did a quick fuse check last night but, I will check again just to be sure.

 

[Warthog]

Did you read any of then GEN2 thread that has been going on the last few days?

http://www.steelsoldiers.com/showth...iring-Gremlin-on-1986-M1008-assistance-needed!

 

[Matt Kahle]

I was looking at them but when I checked the brown and red wire with the ohm meter and the gen-1 worked and gen-2 didn't that makes me think that there might be a short in the wiring. The heater which links up with gen-2 right?

 

[Matt Kahle]

One thing your right about it that black gook I should clean that out. I cut out the old voltage regulator connector and I'm going to replace it with a new one I got from cucv electric when they still sold parts

 

[Warthog]

No. Heater and Gen1.

I'm confused. You don't have a voltmeter but you have an ohmmeter?

Without a voltmeter we are just pissing in the wind.

 

[Matt Kahle]

Hmm okay I will see to it that I get one or brow one from my grand father. ps the ohm meter is his old one that he lift in the shop.

 

[Warthog]

Walmart has a multimeter for around $10. Not great but does work. Allows cor checking voltages, ohms, amps and other items. Everyone should have one in their toolbox.

Also remember that we are talking about two different voltmeters. One on the dash and one in your toolbox.

The one on the dash tells us if part of the wiring is working. The one in the toolbox allows us to test the system.

 

[Matt Kahle]

I'm sorry to say I don't have the money or a ride to get there but I just bowed one from my grand father a real nice one too.

 

[Warthog]

Okay. Great that will work. Do you know how to test for voltages?

 

[Matt Kahle]

yes I do

 

[Warthog]

Using the multimeter, check for 24v at the very bottom fuse. Leave the fuse in and test on both sides of the fuse. There is a little tab that allows for testing.

 

[Matt Kahle]

yup I will do that after dinner and then I will post what ever I find. and some photos too.

 

[Matt Kahle]

Yeah I have 24v there.

 

[Matt Kahle]

Now what do I check?

 

[Warthog]

The path for the GEN2 circuit is this:

24v Buss Bar to the 24v fuse.
24v fuse to the GEN2 bulb
GEN2 bulb GEN2 relay
GEN2 relay to the GEN2 diode
GEN2 diode to the GEN2 excitor plug

Since you now have to grandfathers voltmeter, you need to check for the correct voltage at the GEN2 excitor plug. You are not just looking for a "reading" but you are looking for a correct voltage reading.

It is not voltage regulator. You would have to disassemble the alternator to remove it..

We fully understand you are young and have limited knowledge on about the vehicle. We just ask that you attempt to learn and use the correct (or closer to correct) wording. It makes out job helping you easier.