I have purchased a rebuild alternator for my sons falcon. I have tested the alternator and it is working. the "one wire" voltage reg. I purchased from falcon parts .com isn't exciteing the alternator. The only help I got from falconparts is pathetic. Any one have any ideas? The part is transpo f7078. Thanks for the help
generator to alternator conversion
- Thread starter bertfam
- Start date
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Anonymous
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Did they anything about engine revs having to be a bove 2000 rpm for it to start exciting? not positive just a thought.
I used the one wire alternator conversion from falconparts.com and did not have any issues. I even made my "GEN" warning light functional. Here is a link to the page that discribes the electrical connections.
http://falconparts.com/One Wire Alternator.htm
It does mention reving the engine up initially to get it going. Double check all of your connections. If you're using parts of the old wiring harness, you could have cracked / dry rotted wires causing problems. Make sure your connections (to terminals and grounding points) are good. Painted surfaces will cause grounding issues - sand / scrape the paint around the connection. Many times I've simply undone a connection, cleaned it up with a file or sand paper and it works - eventhough nothing really looked wrong with it. If none of this works - looks like a bad regulator from falconparts.
http://falconparts.com/One Wire Alternator.htm
It does mention reving the engine up initially to get it going. Double check all of your connections. If you're using parts of the old wiring harness, you could have cracked / dry rotted wires causing problems. Make sure your connections (to terminals and grounding points) are good. Painted surfaces will cause grounding issues - sand / scrape the paint around the connection. Many times I've simply undone a connection, cleaned it up with a file or sand paper and it works - eventhough nothing really looked wrong with it. If none of this works - looks like a bad regulator from falconparts.
You might just go to an external regulator, there's a good argument that they're actually better than "one-wire" systems, because of remote voltage sensing. Nothing really wrong with an external regulator, just get a solid-state one, not an old-type mechanical.
I converted from a generator to an alternator, and went with an external regulator (it's different from the one for a generator). Got an alternator harness at the parts yard. Had to have an extra wire to the regulator, but that was easy! And it charges at 13.9 volts, no worries!
Here's some really good reading on charging systems.
http://www.madelectrical.com/electrical-tech.shtml
I converted from a generator to an alternator, and went with an external regulator (it's different from the one for a generator). Got an alternator harness at the parts yard. Had to have an extra wire to the regulator, but that was easy! And it charges at 13.9 volts, no worries!
Here's some really good reading on charging systems.
http://www.madelectrical.com/electrical-tech.shtml
Since two voltage regulators from falconparts.com have not worked, sounds like a wiring / wiring harness issue. Double/Triple check ALL the connections referred to in the instructions (link above) and try again.
I replaced my generator a long time ago (thinking for sure it was the generator causing my problem) and found that there was a wiring harness problem. Now I have two good generators sitting in boxes. The original one and the replacement one that was not needed.
As far as specifics to look for... I'm not sure what lead would cause the "field" to discharge. Did you install the spacer nuts between the voltage regulator and the alternator? This could cause a pinched wire (therefore a ground - possibly the field lead) if the spacer nuts are left out.
Hope this helps.
Scott
I replaced my generator a long time ago (thinking for sure it was the generator causing my problem) and found that there was a wiring harness problem. Now I have two good generators sitting in boxes. The original one and the replacement one that was not needed.
As far as specifics to look for... I'm not sure what lead would cause the "field" to discharge. Did you install the spacer nuts between the voltage regulator and the alternator? This could cause a pinched wire (therefore a ground - possibly the field lead) if the spacer nuts are left out.
Hope this helps.
Scott
