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brake light/generator light on same time
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azsunny58
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Joined: March 19, 2008
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Location: AZ
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PostPosted: Mon May 11, 2009 9:27 pm    Post subject: brake light/generator light on same time Reply with quote

Hi everyone, we've got a curious occurance going on with our 73 thing.
While driving her one day the generator and brake warning light both came on at the same time. I've checked the brake fluid, and there are no obvious leaks in the wheel cylinders, the brake pedal still feels like it usually does. Don't quite understand why the generator light is lending sympathy support to the brake warning light, has anybody else had this experience?
Thanks,
Sunny
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Towel Rail
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Joined: April 15, 2005
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Location: SW CR IA US NA PE
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PostPosted: Mon May 11, 2009 9:38 pm    Post subject: Reply with quote

Maybe there's a short in the brake switch? Just a random guess.

- Scott
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1974 Thing -- under the knife
1967 Beetle -- spring/summer/fall driver
1996 Subaru OBW (EJ22, 5-speed, AWD) -- winter car, 3-seasons "don't feel like biking today" car

049 > 070 > 053 > 009
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Ian Epperson
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PostPosted: Mon May 11, 2009 9:51 pm    Post subject: Reply with quote

The brake warning light has a feature where it tests the light while key is on but the engine is off - just like the gen and oil lights. With the older lights, you pushed them in to test, and you were supposed to do this every time you started the car - no one did. So, in the newer cars (like the Thing) this became automatic. When the gen light is on the first time, the brake warning light is supposed to test. After the gen light goes out, the brake warning light behaves as normal.

So, it's not a brake problem, it's a generator problem - and maybe a brake warning light problem that you didn't know about.
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azsunny58
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PostPosted: Tue May 12, 2009 5:06 am    Post subject: Reply with quote

Thanks Ian and Scott,
We'll take a look at the electrical and see if something doesn't show up.
Sunny
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Towel Rail
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PostPosted: Tue May 12, 2009 11:36 am    Post subject: Reply with quote

I'd follow Ian's lead first -- that guy knows his stuff, and I've gotten a little rusty (in more way than one). Laughing

- Scott
_________________
1974 Thing -- under the knife
1967 Beetle -- spring/summer/fall driver
1996 Subaru OBW (EJ22, 5-speed, AWD) -- winter car, 3-seasons "don't feel like biking today" car

049 > 070 > 053 > 009
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Ian Epperson
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PostPosted: Tue May 12, 2009 11:52 am    Post subject: Reply with quote

Towel Rail wrote:
I'd follow Ian's lead first -- that guy knows his stuff, and I've gotten a little rusty (in more way than one). Laughingt

A little wire wheel and POR-15, and you'll be fine! Very Happy
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LoveMyThing
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PostPosted: Sun Sep 10, 2017 9:16 am    Post subject: Re: brake light/generator light on same time Reply with quote

Old thread. Now I am having this problem.

My generator seized so I replaced it.

Now, brand new generator and voltage regulator and the gen light and brake warning lights are coming on together and flickering off at high Rpms. I have 14.5 volts at the battery so the gen and voltage regulator seem to be working.

This has me perplexed.

Any suggestions?
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