Brake lights not working!

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
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ziptek
Posts: 20
Joined: Tue Jul 28, 2009 10:31 am
Car: 300zx

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so my brake lights are not working when i hit brakes, just the third brake light works. ive check all the fuses and the bulbs look good, what else could it be? :confused: need some help before i get pulled over and get a ticket. thanks in advance :dblthumb:


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Ace2cool
Posts: 12672
Joined: Sun Apr 20, 2008 5:21 pm
Car: 1991 Nissan 300ZX TT
1966 Datsun Fairlady 1600
2005 Suzuki GSX-R 600
1974 Honda CB550 Four
2009 Ford F150 Lariat
Location: Murfreesboro, TN

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Technical section.

Is your brake light indicator on the gauge cluster coming on when you press the pedal? I'd look at the brake light relay in the hatch. It's on the (USDM) driver's side, mounted in the interior panels in the hatch on the back wall. Looks like either a green or white box with wires coming out of one side.

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ziptek
Posts: 20
Joined: Tue Jul 28, 2009 10:31 am
Car: 300zx

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sorry about that I guess I did post in the wrong section.

but no, the light on the gauge cluster never comes on when I press the brake. and ok I'll give the relay a check

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ziptek
Posts: 20
Joined: Tue Jul 28, 2009 10:31 am
Car: 300zx

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UPDATE! I got them working, it was the green relay bought a new and installed it in today thanks ace2cool

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Ace2cool
Posts: 12672
Joined: Sun Apr 20, 2008 5:21 pm
Car: 1991 Nissan 300ZX TT
1966 Datsun Fairlady 1600
2005 Suzuki GSX-R 600
1974 Honda CB550 Four
2009 Ford F150 Lariat
Location: Murfreesboro, TN

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No problem bud. Glad I could help. :dblthumb:

brigon19
Posts: 3
Joined: Wed Apr 30, 2014 8:42 pm
Car: 300zx

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i just bough a 1990 300zx
i im having the same problem as one the guys here
my brake lights dont work only the little bar on the trunk works
also when i turn my lights at night the tail lights turn on but i still no brake lights. the dash says lights everytine i press the brake peda,dont know if thats good or bad. its the first time i own a Z

solaire
Posts: 161
Joined: Sun Mar 02, 2014 1:00 pm

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You have the same problem. Mine did it, bought that little green box from nissan and i've had no more trouble.

brigon19
Posts: 3
Joined: Wed Apr 30, 2014 8:42 pm
Car: 300zx

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thanks for gelping me out.
bought the relay and working great now

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Slipstream
Posts: 1903
Joined: Fri Aug 05, 2005 1:35 pm
Car: '94 Sonoma, '90 300zx n/a

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Is there a way to test the relay to see if it's bad, before buying a new one?

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Ace2cool
Posts: 12672
Joined: Sun Apr 20, 2008 5:21 pm
Car: 1991 Nissan 300ZX TT
1966 Datsun Fairlady 1600
2005 Suzuki GSX-R 600
1974 Honda CB550 Four
2009 Ford F150 Lariat
Location: Murfreesboro, TN

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If you wanna look that far into the wiring of it, I'm sure there is, but if your symptoms are like those above, I'll almost guarantee it's the relay.

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Slipstream
Posts: 1903
Joined: Fri Aug 05, 2005 1:35 pm
Car: '94 Sonoma, '90 300zx n/a

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Replaced & still nothing. Not sure if I'm getting power up to the relay now there was a short & burnt wire from the previous owner installing an aftermarket wing. The old relay was burnt up inside pretty bad. I'm gonna check it at the switch & go from there.


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