demotorsport Posted March 21, 2008 Report Share Posted March 21, 2008 hey guys need some help/advice with wirring up alternator its the stock type with output b on the thread with a nut and a circle plug on back with 3 wires sense,ignition and lamp wire 1st Do they have a built in regulator??? 2nd i have wired pin b with tread dirrect to battery and didnt use the plug with 3 wires and it don't charge if i wire up the 3 wire plug will it start to charge??? 3rd what does the 3 wire plug do and how is it connected??? i have a diagram from a moderator posted on here and it says s= 12 volt reference so i guess this is linked to b along with battery wire l= dash lamp charge light ig= igniton switched source so i guess this goes to ignition wire can some1 confirm the above and tell me if I'm on the rite track please thanks Quote Link to comment Share on other sites More sharing options...
Medicine_Man Posted March 21, 2008 Report Share Posted March 21, 2008 *Re-located to the correct sub-forum* Yep, You have got it pretty much spot on there, (as described on ae86dc just recently - http://www.ae86drivingclub.com.au/board/in...c=29433&hl= ) (more info here on the rollaclub FAQ - http://www.rollaclub.com/faq/index.php?tit..._Wiring_Diagram ) 4AG(Z)E motors usually run a Denso Internally regulated alternator with a 3 pin plug connector. (There is a round type plug and an oval type plug). - Should really find the pin diagram for the round one as thats whats on the 4AGZE ones I think.. The main post (B+) goes straight to your battery... 3 Pin plug has, IG = Ignition L = Lamp S = Sense Ignition (Ignition switched 12v - Think its either Black/Red, Black/Orange or Black/Yellow) Yellow should be the lamp (Goes to ground/frame return when the alternator spins up) thick White should be sense (Goes to battery to sense battery voltage for voltage regulation) And yes it does require the 3 Pin plug to power up the internal regulator to make it charge and the warning light work... Quote Link to comment Share on other sites More sharing options...
demotorsport Posted March 21, 2008 Author Report Share Posted March 21, 2008 *Re-located to the correct sub-forum* Yep, You have got it pretty much spot on there, (as described on ae86dc just recently - http://www.ae86drivingclub.com.au/board/in...c=29433&hl= ) (more info here on the rollaclub FAQ - http://www.rollaclub.com/faq/index.php?tit..._Wiring_Diagram ) 4AG(Z)E motors usually run a Denso Internally regulated alternator with a 3 pin plug connector. (There is a round type plug and an oval type plug). - Should really find the pin diagram for the round one as thats whats on the 4AGZE ones I think.. The main post (B+) goes straight to your battery... 3 Pin plug has, IG = Ignition L = Lamp S = Sense Ignition (Ignition switched 12v - Think its either Black/Red, Black/Orange or Black/Yellow) Yellow should be the lamp (Goes to ground/frame return when the alternator spins up) thick White should be sense (Goes to battery to sense battery voltage for voltage regulation) And yes it does require the 3 Pin plug to power up the internal regulator to make it charge and the warning light work... your corrrect i have the circle plug type and also have the oval type for a spare so white wire to 12v battery(b termainal) black yellow to ignition wire yellow to lamp(dash light) i only have 1 problem i don't know where the dash light wire for dash is as its in a old datsun and can't find it can i leave it out??? or whats a way around this problem as i don't understand what you said about it??? (HOPE I CAN LEAVE THAT OUT OR DO SOMETHING ELSE BOUT IT) and can you also post the oval type wirring instructions for future referance???? thank you so much mate your a life saver i will get onto it asap cause its the only thing stopping me from driving the car for the 1st time thanks alot mate Quote Link to comment Share on other sites More sharing options...
Medicine_Man Posted March 21, 2008 Report Share Posted March 21, 2008 Aah, I thought you were putting it into a corolla, The wire colour may change in another vehicle, Basically with your ignition on, Once you touch the wire to the vehicles earth/frame return the charge light should come on on the dash. Not 100% necessary for the alternator to charge, But good to know that your alternator is charging and working properly.. I will look up the wiring diagram for the later alternators and put that up in the same section of the FAQ.. Quote Link to comment Share on other sites More sharing options...
demotorsport Posted March 21, 2008 Author Report Share Posted March 21, 2008 Aah, I thought you were putting it into a corolla, The wire colour may change in another vehicle, Basically with your ignition on, Once you touch the wire to the vehicles earth/frame return the charge light should come on on the dash. Not 100% necessary for the alternator to charge, But good to know that your alternator is charging and working properly.. I will look up the wiring diagram for the later alternators and put that up in the same section of the FAQ.. the wires are like you said colour wise and the plug is the same as the 1 you posted on another thread the diagram and picture you posted somewhere else is the same as my alternator and the plug i got off another toyota from a wrecker yard and i cut the plug far off so there is a good 50mm to 100mm of wire coming out of plug but i see what your saying i just have to find ignition wire to match the wire off the alternator and loop the white power wire to the main b terminal of the alternator where the main power +12v goes from battery and for now ill leave the lamp wire disconected and do you think then the alternator will charge??? is this all correct just to confirm??? Thank you very much for your help i been checking for your replies all day...lol... Quote Link to comment Share on other sites More sharing options...
Medicine_Man Posted March 21, 2008 Report Share Posted March 21, 2008 Yeah, Ideally the white wire should go back to the battery as that is where it needs to sense the voltage, but you can in theory do it to the post on the alternator but that is a tad dodgy.. Once you have at least a battery and ignition to that plug the alternator should charge when the engine is running.. Quote Link to comment Share on other sites More sharing options...
demotorsport Posted March 21, 2008 Author Report Share Posted March 21, 2008 Yeah, Ideally the white wire should go back to the battery as that is where it needs to sense the voltage, but you can in theory do it to the post on the alternator but that is a tad dodgy.. Once you have at least a battery and ignition to that plug the alternator should charge when the engine is running.. the battery is at the back of the car so will be a pain to do but if you recomend it i trust you enough to do it like you say to the post i have power from main lead from battery in boot that feeds the starter motor then back to alternator post via smaller wire+fusible link wire ecu relay power to alt post fuel pumps relay power to alt post i don't realy get how the battery will charge if the power is going 1 way and the alt charge wants to go other way probably stupid question but I'm intrested how it works??? ill probably run the sense wire to the conection where the main power cable meets the starter cable along with where the alt cable all joins up (but i see no difference realy) but is this less dodgy or should i run a wire to the boot??? and ill leave the lamp wire off untill i work out where it comes off the instrumental panel thanks alot for all this mate i realy do appreciate it Quote Link to comment Share on other sites More sharing options...
demotorsport Posted March 23, 2008 Author Report Share Posted March 23, 2008 i wired it up like you said and I'm pretty sure it perfect I'm gettin car off (12.68v) car on (14.00v) does this sound good to you mate thank you very much for all your help mate i appreciate it Quote Link to comment Share on other sites More sharing options...
Medicine_Man Posted March 23, 2008 Report Share Posted March 23, 2008 Yep, Anything above 13.8v to 14.3v is what you are generally looking for when your car is running. Depends on the regulator, Some charge higher/lower than others.. Quote Link to comment Share on other sites More sharing options...
Roo Posted August 5, 2008 Report Share Posted August 5, 2008 hey i just wiring my 4agze alt up, i got the sense and ignition but where does the lamp go? ( i know if goes to dash lamp) but where can i find the wire going to it? cheer s Quote Link to comment Share on other sites More sharing options...
Medicine_Man Posted August 5, 2008 Report Share Posted August 5, 2008 Usually a yellow wire from memory should be near where the original alternator was. Quote Link to comment Share on other sites More sharing options...
Roo Posted August 5, 2008 Report Share Posted August 5, 2008 Usually a yellow wire from memory should be near where the original alternator was. ok i used that one, doesnt show anything on the dash ohwell Quote Link to comment Share on other sites More sharing options...
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