Generator light come on when brakes are applied |
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Generator light come on when brakes are applied |
gs11x |
Feb 24 2008, 08:46 PM
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#1
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Newbie Group: Members Posts: 8 Joined: 24-February 08 From: Olympia, Wa Member No.: 8,745 Region Association: Pacific Northwest |
My generator light come on when I step on the brakes. Has anyone else experienced this or know the cause?
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brp986s |
Feb 24 2008, 09:01 PM
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#2
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Member Group: Members Posts: 434 Joined: 27-September 07 From: los angeles Member No.: 8,167 |
is fuse #9 blown?
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abbott295 |
Feb 24 2008, 09:02 PM
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#3
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Member Group: Members Posts: 237 Joined: 20-January 07 From: Georgia Member No.: 7,468 |
Welcome to the forum!
It's a year since mine has run, but a common cause of strange electrical problems is a faulty ground. Oh, and also, this thread is worthless without pics. (Standard greeting along with the welcome) |
Mugs914 |
Feb 24 2008, 09:14 PM
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#4
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"Hey, yellow IS faster!" Group: Members Posts: 618 Joined: 22-July 05 From: Temple TEXAS Member No.: 4,452 Region Association: Southwest Region |
Welcome to the madness! You've found a fantastic group of folks here...
Oh, and... (IMG:style_emoticons/default/thisthreadisworthlesswithoutpics.gif) Now, check the fourth fuse from the right in the main fuse panel. It might still be good, but not making good contact. Take it out and clean the ends of the fuse and the contacts on the panel with some sandpaper or a small file. That should take care of it. Might as well do the whole fuse panel while you're at it. When I cleaned up the fuses and contacts on my first 914 all kinds of things suddenly started working properly! |
gs11x |
Feb 24 2008, 10:29 PM
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#5
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Newbie Group: Members Posts: 8 Joined: 24-February 08 From: Olympia, Wa Member No.: 8,745 Region Association: Pacific Northwest |
thanks for the quick reply. I will double check the fuses. I just though it was strange that it only happened when I steped on the brake. It does not happen when I load the electrical system with headlights or anything else electrical. |
jd74914 |
Feb 24 2008, 10:30 PM
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#6
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Its alive Group: Members Posts: 4,780 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
As they said, the fuse is blown. (IMG:style_emoticons/default/smile.gif)
Welcome to the club also! (IMG:style_emoticons/default/welcome.png) |
championgt1 |
Feb 24 2008, 11:02 PM
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#7
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Don't embarrass me Filmore! Group: Members Posts: 2,680 Joined: 3-January 07 From: Tacoma, Washington Member No.: 7,420 Region Association: Pacific Northwest |
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dr914@autoatlanta.com |
Feb 25 2008, 08:13 AM
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#8
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914 Guru Group: Members Posts: 7,866 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
yes fourth fuse from the right is loose and brakes and tach are on the same circuit. How 'bout the "Tech Tips 700" tells about all of the 914 quirks!
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Series9 |
Feb 25 2008, 09:53 AM
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#9
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Lesbians taste like chicken. Group: Members Posts: 5,444 Joined: 22-August 04 From: DeLand, FL Member No.: 2,602 Region Association: South East States |
The alternator field power (the warning light) shares its power source with the brake lights and the back-up lights. If you have a ground fault in either circuit, it will pop the fuse and effectively "turn off" your alternator.
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gs11x |
Feb 25 2008, 10:09 AM
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#10
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Newbie Group: Members Posts: 8 Joined: 24-February 08 From: Olympia, Wa Member No.: 8,745 Region Association: Pacific Northwest |
I think I found the problem. Fuse was not blown. I crawed under the car to take a look at the master cylinder and it looks like there are two wires the go to the presure switch. Although the switch on the master cylinder only has a spot for one wire. I looked in the autoatlanta catalog and it looks like it shows a 2 pole switch and a single pole switch for 1973.
so it look like the previous owner put in a new master cylinder with a single pole switch when it needed a double. Does anyone know why 2 different switches in 1973. From the wiring diagram it looks like it sends 12v to the MC and when you step on the break the presure switch completes the Circuit..... |
TravisNeff |
Feb 25 2008, 10:33 AM
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#11
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region |
Newer MC's had a single pole, the ground was through the body of the MC - so the brown wire is not needed.
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Series9 |
Feb 25 2008, 06:44 PM
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#12
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Lesbians taste like chicken. Group: Members Posts: 5,444 Joined: 22-August 04 From: DeLand, FL Member No.: 2,602 Region Association: South East States |
The fact that the fuse isn't blown does NOT mean that you don't have a short in the brake lights or back-up lights.
A minor short (one that won't blow the fuse) in either circuit, will create the exact problem you have. I've seen it several times. Specifically, look on the side of your tranny for the back-up light switch. Check to see if one of the wires has come out and is rubbing on the transmission. |
marks914 |
Feb 25 2008, 07:32 PM
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#13
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Senior Member Group: Members Posts: 845 Joined: 9-October 04 From: the motor city Member No.: 2,912 Region Association: None |
Sounds like the master cylinder sensor lamp is in the generator lamp socket. Add some fluid and tyr again.
Mark |
orange914 |
Feb 26 2008, 01:20 AM
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#14
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http://5starmediaworks.com/index.html Group: Members Posts: 3,371 Joined: 26-March 05 From: Ceres, California Member No.: 3,818 Region Association: Northern California |
we put a 1156 -single tip- in the brake/driving socket mistakenly once and as i recall the turn signals (maybe gen light) came on w/ brakes applied... check bulbs
mike |
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