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Cliff@BrownBags
Samba Member
Joined: June 14, 2007
Posts: 649
Location: glen burnie maryland
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 Posted: Sat Apr 26, 2008 3:10 pm Post subject: 67 alt conversion question. wont run on battery alone |
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| o.k. i did a search and all it did was make things worse. i found 10 different answers that were all different lol. i did a conversion, wired everything up correct. but when i dissconect the battery it dies. i heard that if the idiot light is not working then this will happen then i heard the oppisite. my light is not hooked up. im doing the wireing the beginning of next week. the car is on stands and is not going anywhere right now but its 1 thing at a time and i just want to make sure this works so i can start on the next thing |
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Russ Wolfe
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Joined: October 08, 2004
Posts: 25187
Location: Central Iowa
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| Posted: Sat Apr 26, 2008 3:12 pm Post subject: |
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You do need the idiot light for the alternator to work.
It is the current that gets the alternaotr started.
But don't disconnect the battery while it is running. If you need a volt meter, Harbor Freight sells them for $3.99.
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Society is like stew. If you don't keep it stirred up, you end up with a lot of scum on the top!--Edward Abbey
Gary: OK. Ima poop. |
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Cliff@BrownBags
Samba Member
Joined: June 14, 2007
Posts: 649
Location: glen burnie maryland
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| Posted: Sat Apr 26, 2008 4:29 pm Post subject: |
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| how can you test it with out the battery off? if i check the small wire at the battery i get nothing, if i check the larger red wire i get 12v. but could that not just be back feed from the battery? |
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Russ Wolfe
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Joined: October 08, 2004
Posts: 25187
Location: Central Iowa
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| Posted: Sat Apr 26, 2008 4:52 pm Post subject: |
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Check it from post to post on the battery. With the engine at a fast idle, it should show above 14V.
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Society is like stew. If you don't keep it stirred up, you end up with a lot of scum on the top!--Edward Abbey
Gary: OK. Ima poop. |
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Cliff@BrownBags
Samba Member
Joined: June 14, 2007
Posts: 649
Location: glen burnie maryland
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| Posted: Sat Apr 26, 2008 6:47 pm Post subject: |
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| thank you sir, will do |
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Cliff@BrownBags
Samba Member
Joined: June 14, 2007
Posts: 649
Location: glen burnie maryland
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| Posted: Sat Apr 26, 2008 9:05 pm Post subject: |
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| hooked up the dash lights ect. i didnt do the battery test because you guys were saying thats a bad idea, but when i click the ignition on all the lights work, when i start it the lights go out. is it safe to assume that means its working? i wasnt getting 14v at the alt, but more like 12.7 |
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67type0ne
Samba Member
Joined: February 22, 2008
Posts: 426
Location: Alcolu SC, Oakdale CA
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| Posted: Sun Apr 27, 2008 12:02 am Post subject: |
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| pulling the cable works to check the alt. using a voltmeter is the best way b/c like it sounds in your case the alt. isn't working . I would....get the voltmeter check the voltage of the battery....start the car and check again....like russ said it should be in the high 13's or 14v . 12.7v just is'nt gonna keep your battery up . If the alt. new and you have been wiring the car I would go back and re-check everything just to be sure . |
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Cliff@BrownBags
Samba Member
Joined: June 14, 2007
Posts: 649
Location: glen burnie maryland
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| Posted: Sun Apr 27, 2008 9:31 am Post subject: |
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| yea its a brand new bosch 75 amp. ill check again thanks |
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Cliff@BrownBags
Samba Member
Joined: June 14, 2007
Posts: 649
Location: glen burnie maryland
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| Posted: Mon Apr 28, 2008 11:44 am Post subject: |
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| cool, i un hooked it and its putting out around 15v. thanks again |
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