D3 no power at trailer plug

**hpal** · 29th March 2018, 05:08 PM

So, I had the trailer on the D3 for the first time today to get the rego check done and to my surprise the tail and numberplate lights weren't working but they did on the defender last year. Hooked it up to another car and it all worked fine. I am using a round to flat adapter but it's not the problem. The only lights i have are blinkers and brake lights, no parkers, numberplate or reverse light. Test light confirmed that no power is at the socket on the car for the things that aren't working. I'm new to this car, is there something common this could be? Thanks

**orville** · 29th March 2018, 05:10 PM

Check the fuses.

**loanrangie** · 29th March 2018, 05:50 PM

Did you try both sockets ?

**hpal** · 29th March 2018, 06:59 PM

Originally Posted by loanrangie

Did you try both sockets ?

No I didn't, what's the deal with the white one? I just thought it was caravan power or something, it's different though and my adapter wont fit it. Will check fuses in the morning.

**iannicki** · 29th March 2018, 07:19 PM

It must be the day for it. I was testing out a bike rack number plate holder with lights (Number Plate Holder - #RBCA011 | Rhino-Rack). Indicator and brakes work, but not rear lights.

Multimeter on the D4 trailer plug gave about 10 volts for indicators and brake lights, but about 0.2 volts for rear lights. Then it got dark and dinner was ready.

I assume I should be getting more than 0.2 volts for the rear lights at the trailer plug. But as I am getting some power, it can't be a blown fuse (can it?).

Grateful for any ideas.

**Globetrotter** · 29th March 2018, 07:27 PM

LH rear corner inside is a cover, under the cover is a fuse box for the trailer connections. That's where you need to start

**hpal** · 30th March 2018, 10:58 AM

2x 5A fuses were blown. Should be good now hopefully

**orville** · 30th March 2018, 04:01 PM

Originally Posted by hpal

2x 5A fuses were blown. Should be good now hopefully

A trailer with incorrect wiring or short circuit has been plugged into the vehicle.

**iannicki** · 30th March 2018, 06:56 PM

Originally Posted by iannicki

It must be the day for it. I was testing out a bike rack number plate holder with lights (Number Plate Holder - #RBCA011 | Rhino-Rack). Indicator and brakes work, but not rear lights.

Multimeter on the D4 trailer plug gave about 10 volts for indicators and brake lights, but about 0.2 volts for rear lights. Then it got dark and dinner was ready.

I assume I should be getting more than 0.2 volts for the rear lights at the trailer plug. But as I am getting some power, it can't be a blown fuse (can it?).

Grateful for any ideas.

My culprit was found. Being a D4, fuses for the trailer were behind the glove box. I'm guessing caused by a dodgy hire trailer. At first didn't think it was a fuse as there was at least some small voltage at the trailer plug pin. I guess that was just leakage.

hpal is happy, I'm happy, Happy Easter to everyone on AULRO.

**shanegtr** · 31st March 2018, 02:27 PM

I had the fuse for my trailer tail lights in the glove box pop recently too. Fuse at the back was fine. Hasnt gone since so no idea what caused that

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