12V conversion - charging lamp

_AndyA_

Member
Hi,

I have purchased a conversion kit with a one output alternator (although it has two more connectors under a black protective cover).

How do I connect the charging lamp to the alternator on my 801? Or do I have to abandon it?

Thanks, Andy
 
Hi,

I have purchased a conversion kit with a one output alternator (although it has two more connectors under a black protective cover).

How do I connect the charging lamp to the alternator on my 801? Or do I have to abandon it?

Thanks, Andy
With a one wire alternator I don't think you can have the idiot light
 
Some one -wire alternators will support an indicator light on the excitation spade, and some won't. You can ask the vendor. You can try it at your own risk. It might work or it might not, and it might screw up the regulator and/or alternator. Your choice. I would remove the light and install a voltmeter.
 
To install a voltmeter I would have to forego the existing temperature, fuel level or oil pressure gauge. Andy
 
Last edited:
On a 10si alternator you have to abandon the idiot light if you want to use it in the one wire configuration.
Since most kits don’t include a true one wire alternator you may find the alternator will not charge unless you rev the motor wide open.
If this is the case or you truly want to use the idiot light you can wire it in by removing the black cover over the two prong connectors.
The connector on the right viewing the alternator from the back goes to full time 12 volt power. You can hook it to the battery plug on the back of the alternator.
The terminal on the left gets hooked to the idiot light. The other wire on the idiot light gets hooked to key switch 12 volt power.
Don’t forget to change the idiot light to a 12 volt bulb.

For all that are suggesting to install a volt or amp gauge I wonder if they realize the dash has no hole to mount the gauge. You have to give up another gauge usually the fuel level gauge to have a place to mount the volt gauge.
 
Never was a fan of one wire. Seems if they have to set over a period of time they will drain the battery. I would use the delco 10si and run the extra wire needed. It is a very simple set up.
 
On a 10si alternator you have to abandon the idiot light if you want to use it in the one wire configuration.
Since most kits don’t include a true one wire alternator you may find the alternator will not charge unless you rev the motor wide open.
If this is the case or you truly want to use the idiot light you can wire it in by removing the black cover over the two prong connectors.
The connector on the right viewing the alternator from the back goes to full time 12 volt power. You can hook it to the battery plug on the back of the alternator.
The terminal on the left gets hooked to the idiot light. The other wire on the idiot light gets hooked to key switch 12 volt power.
Don’t forget to change the idiot light to a 12 volt bulb.

For all that are suggesting to install a volt or amp gauge I wonder if they realize the dash has no hole to mount the gauge. You have to give up another gauge usually the fuel level gauge to have a place to mount the volt gauge.
Or you make a new hole, it has been done before, if keeping it original is not a concern.
 
There is no make or model info on the alternator. I will ask the seller to see if it is 10SI or not. Andy
No need. It’s a 10si.
Common alternator for these kits.
 

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Never was a fan of one wire. Seems if they have to set over a period of time they will drain the battery. I would use the delco 10si and run the extra wire needed. It is a very simple set up.
I'm still offering my $1.00 reward to anyone who can shows me the "drain/leakage" path for the standard one-wire alternator's Voltage regulator, such as D10SE-12.
 
Hi,

I have purchased a conversion kit with a one output alternator (although it has two more connectors under a black protective cover).

How do I connect the charging lamp to the alternator on my 801? Or do I have to abandon it?

Thanks, Andy
If you want the "idiot light" to work, toss the generic one-wire alternator and install a 3-wire alternator. Ask for an alternator for a 1976 Chevy pickup without air conditioning, or if you are up to the task you can install a regulator for the same application into the alternator you have.
 
I can tell if my 10SI is one wire or three wire by checking if the two prong connectors are connected together internally or not?

Andy
 
I can tell if my 10SI is one wire or three wire by checking if the two prong connectors are connected together internally or not?

Andy
They put the plugs on the ones that are supposed to be one-wire as those spades are not used. I have not had a three-wire one come with a plug over those spades as there is a two-pole connector that plugs onto them.
 
I can tell if my 10SI is one wire or three wire by checking if the two prong connectors are connected together internally or not?

Andy
no, some have the two tied and other 1-wire units don't. have both types, here.
 
Not to put down on anyone but to help others reading this post that are thinking of doing this to their tractor because this post reminds me of this statement.

Ask questions before you buy parts not after you buy the wrong parts.

Your best advice now if you truly want an idiot light and can not return the kit is to hook the alternator up with 3 wires. If it fries the alternator (not likely) throw it in the trash and buy a 3 wire alternator. They are 20 to 30 dollars.

You can do this conversion for about $30.
Buy a 3 wire alternator from the parts store or amazon.
Turn the generator mounting bracket around backwards and use some all thread rod and some nuts to place the alternator pulley inline with the crank pulley.
Wire the alternator in and be done with it.

And no there is no way to tell if your alternator is 3 wire a fake 1 wire or a real 1 wire alternator without talking it apart and seeing what regulator is in it. Even then the regulators look the same so you got to hope it has a part number you can research to be sure.
 
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