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Tail Lght Issues!

RBceffy25
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RBceffy25 Rising Star

RBceffy25

Posted
Posted

I own a 1990 nissan Cefiro.

One side (RH side) of my tail lights will not work but the brake lights are fine.(..And yes i am aware that the bulbs are twin filament.)

I have checked the fuses, replaced the bulbs and replaced the relay but they still wont work!.

I put a test light in the bulb socket and there not getting power but the brake light still work fine when the pedal is pressed.

What the hell is going on with it?

Could this be a wiring problem?

A wiring diagram for a A31 cefiro would be helpful to if anyone has one?

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https://www.sau.com.au/forums/topic/274468-tail-lght-issues/
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Nic_A31 Grand Master

Nic_A31

Posted
Posted

Connections.

Mine were playing up. Fuses good, bulbs were good, wiring was good.

Unplug the connection, blow it out, and reconnect it, push as hard together as you can, I found on mine, just because it "clicks" in, doesnt mean its in properly. I had to push it in a tad further, havent had drama's since. Stupid wiring connectors.

daisu Mentor

daisu

Posted
Posted

Not exactly sure what the problem is....

The lights work when you press the brake pedal, but they don't light up when you have your parkers on? Or the lights on one side work but not on the other side?

Either way, check there is no corrosion on the inside of the bulb holder. Check where the wires join to the back of the bulb holder. Check for corrosion where all the earths for the tail light assembly join together.

works 510 Experienced

works 510

Posted
Posted

I think its something else.

I have the exact same problem, its a short somewhere.

turn lights on, only the passenger light gets power, but when you press the brake pedal, both stop lamps works.

Demotorvates me to drive it at nite, I get pulled over, car gets defected.

Ive changed the bulb holders 3 times, its deff not the plug or them, grabbed a test light to the plug of the body loom, its got power when needed but as soom as you plug the bulb holder loom into the body loom, I lose power.

Has to be a short somewhere, no idea where it is, checked everywhere!

:P

daisu Mentor

daisu

Posted
Posted
grabbed a test light to the plug of the body loom, its got power when needed but as soom as you plug the bulb holder loom into the body loom, I lose power.

I haven't looked in my boot for a while, but when you say bulb holder loom is that seperate to the bulb holder? Because you say you check for power at the body loom and that is okay, and you've replaced the bulb holders, but perhaps there is a break in the wire of the bulb holder loom?

DanShirts Collaborator

DanShirts

Posted
Posted
...

Its also draining my battery :O

Ohh, your lucky! You get to find a bad circuit!

Pull the positive battery cable off the battery. Hook up a test light between the positive battery terminal and the positive cable. (+terminal -> test light -> +cable)

Does the light stay on? If it does, then you have a drain on your battery.

Start pulling fuses until the light goes off. Yours is probably the exterior lights circuit. Now that you know which circuit has the drain, you can start unplugging each bulb (or anything else electric) on that circuit.

Your clock and cd player will always have a very small current draw. Usually less than 0.06 amps. So it's a good idea to disconnect those before you start.

Also, you didn't leave the cabin light on, right? :(

blind_elk Grand Master

blind_elk

Posted
Posted

They are twin filament bulbs - 1 filament for brakes, 1 filament for tails. Just because the brakes work doesn't exclude the tails from not working.

The bulb should have 2 "knobs" on the base. They mate against the 2 "knobs" in the bulb holder.

  • 6 months later...

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