Alternator hook up wiring?
11-20-2011, 06:36 AM
#1
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Car: 1987 Camaro Z28
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Alternator hook up wiring?
Ok, so here is my problem and what I am wanting to do. I have gone through 3 alternators and 2 batteries. Both 3 and 1 wire alternators. Ntn will work and charge the battery for more than 10 minz. Always seems fine at first but never lasts. I had a one wire alt hooked up to the battery directly, Then hooked it up to a side post running a separate wire from the side to the battery. No charge from either of them. no matter what the rpms where. The higher I got the rpms the lower the volts would go on the battery. It is a fuel injected. They are both 100amp alts. So I have gone back to parts store and ordered the stock alt. The first alt was the 3 wire. I did the same to this one. ran the wire straight to the battery and on another i ran it to the side post.
So here is what I am wanting to do. I want to redo everything back to what it is suppose to be at. There is a connector on the back, that has 3 wires going into it. 1 big red and 2 little wires. Its old so it is hard to tell what color the wires are. I need to know where each wire goes. The wiring in this car has been butchered up before so a wiring diagram only helps me by so far. Which I have. By looking at the wiring diagram it is saying that there are fusible links leaving the alt going to the battery and starter solenoid? What size fuses should those links be? and does red go to both the starter solenoid and the battery? It also says the 2 smaller wires, one goes to the battery and the other to the ecm. What pin on the ecm?
Sorry for the mess just want to get it all finished and taken care of. With the standard 105amp alt for a oem replacement, is there a trickle charge from it that makes it have to go to a side post then a separate wire from the side post to the battery? Any one willing to contribute there knowledge to this P.I.T.A situation is very much appreciated. Thank you.
So here is what I am wanting to do. I want to redo everything back to what it is suppose to be at. There is a connector on the back, that has 3 wires going into it. 1 big red and 2 little wires. Its old so it is hard to tell what color the wires are. I need to know where each wire goes. The wiring in this car has been butchered up before so a wiring diagram only helps me by so far. Which I have. By looking at the wiring diagram it is saying that there are fusible links leaving the alt going to the battery and starter solenoid? What size fuses should those links be? and does red go to both the starter solenoid and the battery? It also says the 2 smaller wires, one goes to the battery and the other to the ecm. What pin on the ecm?
Sorry for the mess just want to get it all finished and taken care of. With the standard 105amp alt for a oem replacement, is there a trickle charge from it that makes it have to go to a side post then a separate wire from the side post to the battery? Any one willing to contribute there knowledge to this P.I.T.A situation is very much appreciated. Thank you.
11-20-2011, 07:36 AM
#2
Re: Alternator hook up wiring?
Maybe something in the following link will be helpful:
http://www.austinthirdgen.org/index.php?pid=19
JamesC
http://www.austinthirdgen.org/index.php?pid=19
JamesC
11-21-2011, 04:53 AM
#3
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Car: 1987 Camaro Z28
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Re: Alternator hook up wiring?
Yes, I have all these. It only helps so far because even with everything hooked up like it says it is suppose to be, I am still not getting it to charge.
11-28-2011, 03:57 PM
#4
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Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Alternating Pontificating
The heavier red wire goes to the positive stud, and should have power at all times.
The thinner red wire goes to terminal S (the sensing circuit) and should have power at all times.
The brown wire goes to terminal F (the turn-on input) and should have power when the key is in the RUN position.
Because your old wires are difficult to ascertain color, try using an exacto knife to whittle down to fresh insulation to see the color.
If you’re not getting the aforementioned indications make sure the alternator battery terminal goes to the battery thru a fusible link.
(The typical fusible link is two even sizes smaller {numerically higher} than the wire it is protecting.)
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
How bout those too scared to drive without headlights in the daytime
and the ones that need headlights for a little rain
.
The thinner red wire goes to terminal S (the sensing circuit) and should have power at all times.
The brown wire goes to terminal F (the turn-on input) and should have power when the key is in the RUN position.
Because your old wires are difficult to ascertain color, try using an exacto knife to whittle down to fresh insulation to see the color.
If you’re not getting the aforementioned indications make sure the alternator battery terminal goes to the battery thru a fusible link.
(The typical fusible link is two even sizes smaller {numerically higher} than the wire it is protecting.)
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
How bout those too scared to drive without headlights in the daytime
and the ones that need headlights for a little rain.
11-29-2011, 01:18 PM
#5
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Car: 85 Z28
Engine: 327
Transmission: 700R4
Axle/Gears: 3.23
Re: Alternator hook up wiring?
I wired everything on mibe through starter. dont know if good or bad, but seemed to wirk. Also check your, grounds
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