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I did this last weekend, with no issues. I used the 2 connectors on the relay box pin 39 and 40 and join them to the positive wire from the harness relay for the fog lights. The ground wire from the fog lights harness needs to go though the firewall, which you then connect it to the wire that you will run to pins 19 and 10( i used a wire tap) on the N28 connector. Then i used a connector and wire tap to connect pin11 on the N28 to the N12. I tap the wire coming from pin 27 on the back to the connector i push into pin 11 on the N28. That's it
you dont need to run any wire through the firewall. the ground wire can tap into any ground on the car. theres alot of grounds near the ecu o.0
So pin 10 & 19 need to be grounded regardless. Fog light ground wire need to be grounded regardless too. Anywhere there’s ground.
pin10 and pin 19 is both ground. u can ground each wire to a ground if you want. i just combined both and just ground it to a ground with one wire. like a Y.
i think words make u guys confuse. heres a wire diagram on a regular gs with foglight. pin 10 and pin 19 joins together and form a single wire and then to a ground.
i think words make u guys confuse. heres a wire diagram on a regular gs with foglight. pin 10 and pin 19 joins together and form a single wire and then to a ground.
So they both need to be grounded. But making the Y is 1 less wire I have to do.
I combined pin 10 and 19 together since 19 is already a ground. You can complete a secondary ground if you would like, but its not necessary as displayed in the diagram.
Anyone in the California Bay area who has installed fog lights? I am looking for someone who can help me install Morimoto lights. I have a 2015 F Sport. I mostly need help with the electrical. The photos are great to help but I don't know this stuff good enough for the installation. I am open to phone chat if anyone can help.
The latter is how I have mine wired up. I have a 2016+ so I had to use an independent relay and run a wire thru the firewall.
Have you tried connecting to Main ECU first at 5D-22 connection then using the same connections from Fog Light Switch Connections Ground N28 Connector - Pin 10 -> N28 Connector - Pin 19 On/Off Function N28 Connect - Pin 11 -> N12 Connector - Pin 27 So for 2016+ looks like the relay has all the pins, just no wire going from relay to BA2 to lights Wire from relay to lights would be whats circled in red and then wire to go from relay to main ECU is circled in green. I'm thinking of connecting lights through a wire to one of the ports in red, then connecting to ecu circled in green if i don't use my own relay Not sure what 13(blue circle) to 22 (green cicle) means. the 13 looks to be 13 A so is there a wire going from the side of the ECU to the back, meaning 2 wires going to 5D-22(one from engine bay, one from A-13)? from there it should be the same as MY 13-15 i think
I know that I'm late to the party here but I just installed an OEM foglight switch on my '14 GS and this guide was extremely helpful - thanks!
However, there's one error in the information - Part# 82998-24350 (BA2 Connector Pins), terminal repair, is identified to insert into pins 39 and 40 of the BA2 connector in the engine bay fuse box. I ordered these but they were too big. Later I found the correct part number to be Part No. 82998-24290 which fit perfectly.
I also found a guy in Texas on eBay that sells these for cheap: https://www.ebay.com/itm/8299824290-...0/202508563332. He also sells the pins for the foglight switch connector. Unfortunately, it appears that the pins for the ecu connector are not specified by Lexus.
I know that I'm late to the party here but I just installed an OEM foglight switch on my '14 GS and this guide was extremely helpful - thanks!
However, there's one error in the information - Part# 82998-24350 (BA2 Connector Pins), terminal repair, is identified to insert into pins 39 and 40 of the BA2 connector in the engine bay fuse box. I ordered these but they were too big. Later I found the correct part number to be Part No. 82998-24290 which fit perfectly.
I also found a guy in Texas on eBay that sells these for cheap: https://www.ebay.com/itm/8299824290-...0/202508563332. He also sells the pins for the foglight switch connector. Unfortunately, it appears that the pins for the ecu connector are not specified by Lexus.
what pin did you use for n12? I tried the 82998-12870 from the n28 connector but it didn't fit. is 82998-24290 smaller? thats the guy that i bought my connectors from but he said the 82998-12870 is the smallest he has.
what pin did you use for n12? I tried the 82998-12870 from the n28 connector but it didn't fit. is 82998-24290 smaller? thats the guy that i bought my connectors from but he said the 82998-12870 is the smallest he has.
N12 is the ECU connector I was referring to. I couldn't identify the pin for N12 either. So I just had to stick the stranded wire into pin 27 of N12 and tie wrap it to the adjacent wires to make sure it stayed (as PK_Celsior suggested).
I did some research as well by downloading the wiring diagrams for my '14 GS from Lexus. I found specification for the pins in both the N28 and BA2 connectors (that's where I confirmed the correct pin for BA2), but they don't specify the pins for N12. Sucks I know.
The 82998-24290 is smaller than the 82998-24350 but I don't think it's smaller than the 82998-12870. I'm not certain of this though.
N12 is the ECU connector I was referring to. I couldn't identify the pin for N12 either. So I just had to stick the stranded wire into pin 27 of N12 and tie wrap it to the adjacent wires to make sure it stayed (as PK_Celsior suggested).
I did some research as well by downloading the wiring diagrams for my '14 GS from Lexus. I found specification for the pins in both the N28 and BA2 connectors (that's where I confirmed the correct pin for BA2), but they don't specify the pins for N12. Sucks I know.
gotcha, i didn't see the n12 part. did you strip the wire at all or just leave it alone before just shoving it in? I was in no rush to install so i'm just waiting on a t-tap to confirm if my wiring works for 16+ then i'll be writing up a guide for that
06-08-19, 04:41 PM
