Wiring In Alternator
- stamp_licker
- General Member
- Posts: 1066
- Joined: Wed Oct 05, 2005 10:00 am
- Location: Kallangur.Bris North
Wiring In Alternator
The following steps can be used for wiring in any ej ,l,my alternator to any subaru loom.
1 grab your new alt look at the back for a sticker with a wiring diagram,it will be a pic or a round or rectangle plug with a combination of or all of these letters L,S,C,IG.
2now look at your alt you are replacing locate its wiring diagram
3 cut the existing alt plug off and connect the corresponding wires from the new plug to the existing loom by following the pinouts from both alt.eg L to L S to S .
4 The bolt on wire normally white remains the same .
TIPS...... NOT all wires are used in some cases,as long as you have the wires for new alt hooked up just insulate the rest .example going from a early ej with ign wire to a late without.NOT all wires are the same colour for the same pins,Just get the pinouts right.
If you have the new alt and not the plug the wires can be connected from the old plug with spade terminals to the new alt
What the letters mean.... L - light[warning light on dash]
S- sense
ig- ignition on, recieves power when ignition on
1 grab your new alt look at the back for a sticker with a wiring diagram,it will be a pic or a round or rectangle plug with a combination of or all of these letters L,S,C,IG.
2now look at your alt you are replacing locate its wiring diagram
3 cut the existing alt plug off and connect the corresponding wires from the new plug to the existing loom by following the pinouts from both alt.eg L to L S to S .
4 The bolt on wire normally white remains the same .
TIPS...... NOT all wires are used in some cases,as long as you have the wires for new alt hooked up just insulate the rest .example going from a early ej with ign wire to a late without.NOT all wires are the same colour for the same pins,Just get the pinouts right.
If you have the new alt and not the plug the wires can be connected from the old plug with spade terminals to the new alt
What the letters mean.... L - light[warning light on dash]
S- sense
ig- ignition on, recieves power when ignition on
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- Gannon
- Senior Member
- Posts: 4580
- Joined: Sat Nov 05, 2005 10:00 am
- Location: Bowraville, Mid Nth Coast, NSW
Apparently there are a few GM alterators that will fit an EA82. I think holden suburburn was one of them
Ive also heard that the early nissan maxima one will fit too.
Ive also heard that the early nissan maxima one will fit too.
Current rides: 2016 Mitsubishi Triton GLS & 2004 Forester X
Ongoing Project/Toy: 1987 RX Turbo EA82T, Speeduino ECU, Coil-pack ignition, 440cc Injectors, KONI adjustale front struts, Hybrid L Series/ Liberty AWD 5sp
Past rides: 92 L series turbo converted wagon, 83 Leone GL Sedan, 2004 Liberty GT Sedan & 2001 Outback
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Ongoing Project/Toy: 1987 RX Turbo EA82T, Speeduino ECU, Coil-pack ignition, 440cc Injectors, KONI adjustale front struts, Hybrid L Series/ Liberty AWD 5sp
Past rides: 92 L series turbo converted wagon, 83 Leone GL Sedan, 2004 Liberty GT Sedan & 2001 Outback
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- vincentvega
- Senior Member
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Have a look under the Tech Manual there is a electronic copy of the manual for an EA82 and there might be one for an EJ to...
"Bianca"
'86 Brumby - Dual Port Heads, 5 Speed Dual Range, Custom Cam, Tuned Weber, Tuned Suspension, 2" Body Lift Kit, LSD, 14" rims, 2.25" Exhaust, Snorkel, Dual Batteries, DVD Player, UHF, VHF, etc. Offically now part of the 350, 000 km Club! And still pulling like a freight train.
"Claudia"
82 MY Wagon - EA81T, RS Liberty WIAC, 5 Speed Dual Range, Tuned Suspension, 14" Rims 27" Tyres, 2" Body Lift Kit, Apline Head unit, UHF, Roof Console, L Series seats, Soon to have New Paint, snorkel, Dual batteries, etc
'86 Brumby - Dual Port Heads, 5 Speed Dual Range, Custom Cam, Tuned Weber, Tuned Suspension, 2" Body Lift Kit, LSD, 14" rims, 2.25" Exhaust, Snorkel, Dual Batteries, DVD Player, UHF, VHF, etc. Offically now part of the 350, 000 km Club! And still pulling like a freight train.
"Claudia"
82 MY Wagon - EA81T, RS Liberty WIAC, 5 Speed Dual Range, Tuned Suspension, 14" Rims 27" Tyres, 2" Body Lift Kit, Apline Head unit, UHF, Roof Console, L Series seats, Soon to have New Paint, snorkel, Dual batteries, etc
- discopotato03
- Senior Member
- Posts: 2134
- Joined: Sun Mar 18, 2007 9:29 am
- Location: Sydney
It doesn't have to go via the std cars fusible links .
One car I had converted from Carby to EFI (not Subaru) had extra wires directly off the alternator to power various extras . What you have to do in this case is have fuses close to the alternator to protect it against short circuits .
It was a good way to ensure extras were getting full alternator output voltage and not suffereing voltage drop through ancient std wiring looms .
From memory direct alternator feed power went to ECU/ignition/fuel pumps/headlights . Never had any power issues though the alternator being an 80a star wound Bosch ment you had to give it a slight rev to make it charge after startup . All good except for that trivial bit .
Cheers A .
One to be careful of .
Some late cars have their alternator requlators set at 14.4 volts insted of the older 13.8 volt standard . Make sure you have a battery to suit the charge voltage or you can get a few irritationg probs .
The one I mentioned had an aftermarket Ingrams 14.4 V reg on it .
One car I had converted from Carby to EFI (not Subaru) had extra wires directly off the alternator to power various extras . What you have to do in this case is have fuses close to the alternator to protect it against short circuits .
It was a good way to ensure extras were getting full alternator output voltage and not suffereing voltage drop through ancient std wiring looms .
From memory direct alternator feed power went to ECU/ignition/fuel pumps/headlights . Never had any power issues though the alternator being an 80a star wound Bosch ment you had to give it a slight rev to make it charge after startup . All good except for that trivial bit .
Cheers A .
One to be careful of .
Some late cars have their alternator requlators set at 14.4 volts insted of the older 13.8 volt standard . Make sure you have a battery to suit the charge voltage or you can get a few irritationg probs .
The one I mentioned had an aftermarket Ingrams 14.4 V reg on it .
- phillatdarwin
- Junior Member
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- Joined: Thu Dec 25, 2008 6:11 pm
- Location: 93GL / 86rx ea82t Darwin NT
i built onr some 10+ years ago and still got it in my car now it put out 150A and i can run and have run 500watts of lights and had no problems at all with it ..
first u need to work out how much watts u will be needing
then divide that by 12 and u get the amps u need for the alternator to put out and a bit more ..
get a auto lec to build u one like it did to my when i was working as a auto lec a long time a go doing rebuilds
first u need to work out how much watts u will be needing
then divide that by 12 and u get the amps u need for the alternator to put out and a bit more ..
get a auto lec to build u one like it did to my when i was working as a auto lec a long time a go doing rebuilds
- fordmech_SUBI_fan
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- RSR 555
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Sorry to say this but is this for real?? 700+ watts?? what are you running and have you ever heard of HIDs?fordmech_SUBI_fan wrote:suggested altenator for a 98 forester with an ej 20 and 700+ watts (roughly 60 amps) of high beam?? and better yet somewhere to get it? cause i dont thing my 75 amp altenator will last
any help at all would be apreciated
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- fordmech_SUBI_fan
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- Gannon
- Senior Member
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- Location: Bowraville, Mid Nth Coast, NSW
You can put HID kits into spotties
Current rides: 2016 Mitsubishi Triton GLS & 2004 Forester X
Ongoing Project/Toy: 1987 RX Turbo EA82T, Speeduino ECU, Coil-pack ignition, 440cc Injectors, KONI adjustale front struts, Hybrid L Series/ Liberty AWD 5sp
Past rides: 92 L series turbo converted wagon, 83 Leone GL Sedan, 2004 Liberty GT Sedan & 2001 Outback
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Ongoing Project/Toy: 1987 RX Turbo EA82T, Speeduino ECU, Coil-pack ignition, 440cc Injectors, KONI adjustale front struts, Hybrid L Series/ Liberty AWD 5sp
Past rides: 92 L series turbo converted wagon, 83 Leone GL Sedan, 2004 Liberty GT Sedan & 2001 Outback
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- fordmech_SUBI_fan
- Junior Member
- Posts: 3
- Joined: Sat Feb 26, 2011 12:58 am
- Location: western australia mundaring
An HID kit, or the removal of a few lights will be cheaper than a new alternator.
Anyhow, just checked the specs on a Gen 3 Liberty alternator, and its max output is 90A. Pretty sure most of the EJ alternators I've looked at have been around there. 75A seems very low.
Dane.
Anyhow, just checked the specs on a Gen 3 Liberty alternator, and its max output is 90A. Pretty sure most of the EJ alternators I've looked at have been around there. 75A seems very low.
Dane.
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1993 EA82/EJ18/EJ22/EJ22/EJ20/EJ22 L Series perpetual project
1993 EA82/EJ18/EJ22/EJ22/EJ20/EJ22 L Series perpetual project