rb20 s13 no headlights or brake lights [help] - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

steveff · 04-24-2016, 02:25 PM

So I completed the swap in my s13 and went to drive it yesterday and the headlights and brake lights do not work.

What does work:
FRONT blinkers / flashers / fog lights
REAR running lights / blinkers / flashers / reverse lights.

NO headlights, high beams, or brake lights.
Switches are good because the relays click on. But the fuses aren't getting power. Hooked up a multimeter to the fuses and got nothing.

Every fuse/relay in the entire car is good. Checked em all.

So I'm thinking I missed a connector / ground or some sort of BS I'm overlooking. Cant find any plugs or connectors that mean anything to this issue that are unhooked. Don't see any loose or missing grounds. Went over everything with a fine tooth comb. Just seems weird because they're two separate things as far as I know, so what could I be missing that effects both of them??

Any ideas guys?

hobbs · 04-24-2016, 02:33 PM

Grab the FSM and start to trace back through the circuits and find out where you are and were you arnt getting power. Every single harness is blow apart in the FSM along with connectors.

My guess would be the column switch.

steveff · 04-24-2016, 02:34 PM

R32 gtst FSM or an s13 FSM.

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hobbs · 04-24-2016, 02:37 PM

S13 FSM, only thing that interfaces with your RB20 would be the lower transmission harness for the reverse lights.

Tyler_240 · 04-24-2016, 03:30 PM

Are you sure you remembered to plug in your dash harness? the white plug on the passenger side above the ECU way up in the dash?

/my 2cents

steveff · 04-24-2016, 03:30 PM

Yeah. Dash lights and interior lights all work.

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cotbu · 04-24-2016, 05:12 PM

The red plug on the battery is power for the headlights. So if you relocated the battery or just forgot those plugs. That might be your issue. Post a picture in a minute.

steveff · 04-24-2016, 05:13 PM

I did relocate the battery.... I don't remember seeing any red plug

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cotbu · 04-24-2016, 05:17 PM

Did you get that picture?

steveff · 04-24-2016, 05:18 PM

Yeah I got it.... I have no idea where that plug went.

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cotbu · 04-24-2016, 05:19 PM

Do you have the wires that plug into it, if you do add 12v to it and you lights should work.
If you're not sure, if they are the correct wires, remove the headlight fuses and check continuity from the wires to the fuse.

steveff · 04-24-2016, 07:16 PM

So black is alternator and green are headlights. Headlights are figured out now, just need that red plug or a terminal block.

What about brake lights now?

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steveff · 04-25-2016, 07:31 AM

Up

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steveff · 04-29-2016, 10:20 AM

Got it figured out. Headlights were that little red plug that I just hardwired. And the brake lights were a loose power wire going into the interior fuse box.

Weird how both happened at the same time though. Thought for sure it would be related.

Thanks again to whoever suggested that little plug, totally slipped my mind.

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04-24-2016, 02:25 PM	#1
steveff Zilvia Member Join Date: Mar 2012 Location: New Jersey Posts: 295 Trader Rating: (1) Feedback Score: 1 reviews	rb20 s13 no headlights or brake lights [help] So I completed the swap in my s13 and went to drive it yesterday and the headlights and brake lights do not work. What does work: FRONT blinkers / flashers / fog lights REAR running lights / blinkers / flashers / reverse lights. NO headlights, high beams, or brake lights. Switches are good because the relays click on. But the fuses aren't getting power. Hooked up a multimeter to the fuses and got nothing. Every fuse/relay in the entire car is good. Checked em all. So I'm thinking I missed a connector / ground or some sort of BS I'm overlooking. Cant find any plugs or connectors that mean anything to this issue that are unhooked. Don't see any loose or missing grounds. Went over everything with a fine tooth comb. Just seems weird because they're two separate things as far as I know, so what could I be missing that effects both of them?? Any ideas guys?

04-24-2016, 05:12 PM	#7
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 49 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	The red plug on the battery is power for the headlights. So if you relocated the battery or just forgot those plugs. That might be your issue. Post a picture in a minute. __________________ LoverTechnologies "Half Broken Things!"

04-24-2016, 05:17 PM	#9
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 49 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	Did you get that picture? __________________ LoverTechnologies "Half Broken Things!"

04-24-2016, 05:19 PM	#11
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 49 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	Do you have the wires that plug into it, if you do add 12v to it and you lights should work. If you're not sure, if they are the correct wires, remove the headlight fuses and check continuity from the wires to the fuse. __________________ LoverTechnologies "Half Broken Things!"

04-24-2016, 07:16 PM	#12
steveff Zilvia Member Join Date: Mar 2012 Location: New Jersey Posts: 295 Trader Rating: (1) Feedback Score: 1 reviews	So black is alternator and green are headlights. Headlights are figured out now, just need that red plug or a terminal block. What about brake lights now? Sent from my SM-G925T using Tapatalk Last edited by steveff; 04-25-2016 at 07:31 AM..

04-24-2016, 02:33 PM	#2
hobbs Nissanaholic! Join Date: Aug 2010 Location: Under a rock Posts: 2,264 Trader Rating: (43) Feedback Score: 43 reviews	Grab the FSM and start to trace back through the circuits and find out where you are and were you arnt getting power. Every single harness is blow apart in the FSM along with connectors. My guess would be the column switch.

04-24-2016, 02:34 PM	#3
steveff Zilvia Member Join Date: Mar 2012 Location: New Jersey Posts: 295 Trader Rating: (1) Feedback Score: 1 reviews	R32 gtst FSM or an s13 FSM. Sent from my SM-G925T using Tapatalk

04-24-2016, 02:37 PM	#4
hobbs Nissanaholic! Join Date: Aug 2010 Location: Under a rock Posts: 2,264 Trader Rating: (43) Feedback Score: 43 reviews	S13 FSM, only thing that interfaces with your RB20 would be the lower transmission harness for the reverse lights.

04-24-2016, 03:30 PM	#5
Tyler_240 Zilvia Member Join Date: Feb 2005 Location: Gainesville, FL Posts: 239 Trader Rating: (9) Feedback Score: 9 reviews	Are you sure you remembered to plug in your dash harness? the white plug on the passenger side above the ECU way up in the dash? /my 2cents

04-24-2016, 05:13 PM	#8
steveff Zilvia Member Join Date: Mar 2012 Location: New Jersey Posts: 295 Trader Rating: (1) Feedback Score: 1 reviews	I did relocate the battery.... I don't remember seeing any red plug Sent from my SM-G925T using Tapatalk

04-24-2016, 05:18 PM	#10
steveff Zilvia Member Join Date: Mar 2012 Location: New Jersey Posts: 295 Trader Rating: (1) Feedback Score: 1 reviews	Yeah I got it.... I have no idea where that plug went. Sent from my SM-G925T using Tapatalk

04-25-2016, 07:31 AM	#13
steveff Zilvia Member Join Date: Mar 2012 Location: New Jersey Posts: 295 Trader Rating: (1) Feedback Score: 1 reviews	Up Sent from my SM-G925T using Tapatalk

04-29-2016, 10:20 AM	#14
steveff Zilvia Member Join Date: Mar 2012 Location: New Jersey Posts: 295 Trader Rating: (1) Feedback Score: 1 reviews	Got it figured out. Headlights were that little red plug that I just hardwired. And the brake lights were a loose power wire going into the interior fuse box. Weird how both happened at the same time though. Thought for sure it would be related. Thanks again to whoever suggested that little plug, totally slipped my mind. Sent from my SM-G925T using Tapatalk