jd5166
Member
Posts: 18
Reg: 06-09-04
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10-06-04 07:35 AM - Post#525086
Sorry guys, I tried doing a search and reading all the earlier posts but I guess I'm even dimmer than my headlights right now. I swapped the old 4 wire alt. for a new 3 wire (1985)type. Obviously I now have a spare wire just hanging there. What do I do with it? Do I still need the voltage regulator? Was driving the truck last night and the headlights kept getting dimmer and the brightness doesn't increase with the increase on engine rpm. Also checked the battery voltage with engine running and was only reading 10v. Anybody know, in non electrician terms, where these 3 wires off the alternator go?
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Jolly
Senior Member
Posts: 721

Age: 64
Loc: 6066 GMC Trucks
Reg: 12-11-02
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Re: Alternator Swap 10-06-04 07:58 AM - Post#525087
In response to jd5166
The info your looking for is here;
Updating To the '83-'86 Delco-Remy 12SI Series Internal Regulator Alternator
Hope that helps.
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persh
Frequent Contributor
Posts: 1499

Loc: Tucson, Arizona
Reg: 07-19-00
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Re: Alternator Swap 10-06-04 09:23 AM - Post#525088
In response to jd5166
Here's what I did......
I used an newer alternator with an internal regulator. This is an excellent way to go. These units are very dependable and do a much better job that the old fashioned external regulator jobs.
Alternator Swap
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Shorty Cox
Member
Posts: 47

Reg: 08-22-03
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Re: Alternator Swap 10-06-04 02:11 PM - Post#525089
In response to jd5166
It is so easy. I did it to my '64, and i would think it would be just as easy on yours.
First remove the battery cables from the battery.
1. take the regulator off and throw it as far as you can. 2. It should have had 4 wires connected to it. 3. Using a test light, locate the wire that is hot (12 volts)when the ignition switch is in the "run" position. 4. now, locate the wire that runs from the regulator position to the gen/alt. 5. splice the wire located in number 3 above to the one located in number 4. 6. now you have a wire at the gen/alt location that is hot (12volts)with the key in the "run" position. 7. forget the other two wires at the regulator. 8. Now remove the gen/alt and throw it as far as you can(probably can't throw it as far as you did the regulator!!) 9. Should be three wires going to the it. two small wires and one large wire. The large wire is connected to the battery and is hot (12 volts) all the time. 10. Go to the parts house and purchase an alternator with internal regulator and a new "pig tail" (the little thing that plugs onto the two terminals on the side and near the back of the alternator) they are numbered 1 & 2. the pig tail will have a small white wire and a large red wire. The new alternator will also have a large terminal(electrical connection) on the back. It will look like a screw sticking out with a nut on it. 11. Do what it takes to bolt the new alternator into the place of the gen/alt you removed and threw in step 8. 12. Once installed, plug the pig tail onto the terminals mentioned in step 10. attach the large wire from the battery (mentioned in step 9) and the red wire on the pig tail (mentioned in step 10) to the large terminal on the back of the alternator, tighten the nut. 13. Now attach the white wire on the pigtail to the wire identified in steps 4, 5, & 6. 14. Secure all left over wires. 15. Crank her up and you are good to go.
Amp meter should work also. If you have a idot light, i'm not sure.
shorty
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xextr3m3
Senior Member
Posts: 306
Loc: Fremont, CA
Reg: 08-23-03
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Re: Alternator Swap 10-06-04 05:03 PM - Post#525090
In response to Shorty Cox
or......
get one wire alternator, hook up 1 wire from alterantor post to B+, then not sure how you ign. is wired on your truck but if it like mine, then find new source of B+ for ign switch
62 short fleet. It drives around the block!
84 C20 with the Diesel
87 Toyota P/U: lifted, locked, low geared |
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dvalentine
Senior Member
Posts: 9359
Loc: Sacramento, CA
Reg: 06-22-00
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Re: Alternator Swap 10-06-04 07:32 PM - Post#525091
In response to jd5166
ChevyDuty
Make it easy on yourself.
(1963-72) Part # 52-896 Alternator Conversion Kit
$14.95 An External to Internal Regulator kit. Easy plug-in conversion that can be used with 1985 and earlier series alternators.
dv
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Chevy_Stepside
Super Senior Member
Posts: 6011

Age: 61
Loc: San Francisco, Ca, USA
Reg: 07-08-02
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Re: Alternator Swap 10-07-04 03:57 AM - Post#525092
In response to jd5166
Just dont do it the way Mikey did it...
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jd5166
Member
Posts: 18
Reg: 06-09-04
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Re: Alternator Swap 10-07-04 07:11 AM - Post#525093
In response to jd5166
Thanks for the info. guys. Haven't had a chance to try any of it yet but I will this weekend. Hopefully by Saturday afternoon I'll be chargin
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Jolly
Senior Member
Posts: 721

Age: 64
Loc: 6066 GMC Trucks
Reg: 12-11-02
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Re: Alternator Swap 10-07-04 03:19 PM - Post#525094
In response to dvalentine
Vary interesting parts from ChevyDuty, I didn't even know that such a thing was made. I'll be adding that of info to my page.....
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1965C-10
Very Senior Member
Posts: 7982
Age: 47
Loc: San Tan Valley AZ "Phoeni...
Reg: 11-18-01
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Re: Alternator Swap 10-07-04 04:02 PM - Post#525095
In response to Chevy_Stepside
Quote:
Just dont do it the way Mikey did it...
Hey, mine works great, just did'nt have enough wire, I will be making it right
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dvalentine
Senior Member
Posts: 9359
Loc: Sacramento, CA
Reg: 06-22-00
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Re: Alternator Swap 10-07-04 07:52 PM - Post#525096
In response to Jolly
Quote:
Vary interesting parts from ChevyDuty, I didn't even know that such a thing was made. I'll be adding that of info to my page.....
Jolly, I used the same part on the 72 Chevelle I had also. Worked like a charm and made the whole alternator swap a 20 minute job. Can't go wrong for $15.
DV
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Jolly
Senior Member
Posts: 721

Age: 64
Loc: 6066 GMC Trucks
Reg: 12-11-02
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Re: Alternator Swap 10-08-04 05:53 AM - Post#525097
In response to dvalentine
Looking at the Chevy Duty site, I see they also have a kit for the 60-62 trucks, but it's twice the money. (1960-62) Alternator Conversion Kit $29.95 Part # 52-895 (Image not available).
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