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Re: Battery on 8n not charging

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05-06-2013 06:22:18

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iff accy is hot when ignition is on, and goes cold when ign is off, it would work. i generally still like a lamp or small resistor in line to limit current on the #1 circuit, though, as if the charge line comes off.. the alt will try to charge thru the #1 line and burn up the printed traces around 4a..e tc.

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05-06-2013 16:58:10

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 Re: Battery on 8n not charging in reply to soundguy, 05-06-2013 06:22:18  
Ty for the reply what type of resistor? or I have seen were some use a zener diode. Which is better and of what value?

Instead of a resistor could I use a 12 volt dash light? If so what is the best one? I already have a hole where someone had once had the ignition switch. Not sure I would want a dash light that only lights if my alternator fails. I'd like a dash light so I can see dash at night.
This post was edited by toddbmobile at 17:06:42 05/06/13 2 times.

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05-07-2013 05:36:39

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 Re: Battery on 8n not charging in reply to toddbmobile, 05-06-2013 16:58:10  
i'd go with a red lensed marker lamp for the light.. not a resistor.. and certaintly not a zenir diode. that's asking for trouble. a REGULAR diode.. sure.. but not a made-to-avalanch zenir.

if you want a dash light.. get a dash light.

for the lamp inline with the alt #1 a 168 or 194 will work fine.

for a diode.. a 1n5408 will be mor ethan fine.. and radio shack 276-1661 and 276-1141 are ok. in practice.. and 50piv/1a diode will work.. but 200piv and 3a is way superior.

the diode will have a marked side. the marked side goes toward the alt.

strian relif it or it will break the leads off the case.

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05-07-2013 16:30:14

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 Re: Battery on 8n not charging in reply to soundguy, 05-07-2013 05:36:39  
Thank you for the reply. I think I will find a trailer light with a 194 bulb and go that route for terminal 1.

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05-07-2013 16:37:44

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 Re: Battery on 8n not charging in reply to toddbmobile, 05-07-2013 16:30:14  
usually easiest.. side benefit of an idiot lamp too.

just get one with 2 wire pigtail.. not frame grounded.

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05-11-2013 19:29:03

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 Re: Battery on 8n not charging in reply to soundguy, 05-07-2013 16:37:44  
Well I have the 194 lamp installed inline from the number one terminal on alternator and to the acc. connection at switch. It operates as you said it would. Light goes out when tractor starts.

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05-12-2013 11:55:44

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 Re: Battery on 8n not charging in reply to toddbmobile, 05-11-2013 19:29:03  
good deal.

and now if you see that lamp come on while running.. you know you have a fualt int he charge system.

post back if you hit any snags.

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