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scotty38

Member Since: 21 May 2011
Location: Lincolnshire
Posts: 571

2012 Defender 110 Puma 2.2 USW Aintree Green

Trailer electrics

Hi all,

just picked up a new (to me) trailer and all the electrics work but the indicators seem a bit slow and also the dash trailer light varies between very dim and barely on at all as the indicators flash.

The vehicle itself has full LED lights and the trailer is incandescent so I am making the assumption it's that combination that's the issue although I won't be able to check earths etc until the weekend.

Assuming it is the lighting type combination what is my best course of action?

Thanks in advance....

14th Oct 2021 8:44am

LandRoverAnorak

Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

The usual solution is an adjustable flasher relay that allows for the variable load of some LED and some incandescent bulbs. Checking the earths is always a good call, though. Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia

14th Oct 2021 9:37am

rallysteve

Member Since: 10 Feb 2014
Location: Cumbria
Posts: 2227

2002 Defender 110 Td5 DCPU Keswick Green

normal filament bulbs will always appear to flash slower than LED lights (well flashing at the same rate but with a lag) due to the warm-up time of the bulbs. There is nothing wrong here, just how it works.

Assuming the vehicle has the correct flasher unit fitted to go with the LED lights, there should be an adjuster on it which allows you to tweak the current at which the trailer warning light illuminates. You can have a tweak of this with/without the trailer connected to see if that solves the issue. From memory I think you are meant to turn it back so the warning light has just gone off without the trailer connected.

Cheers,
Steve 02' 110 TD5 Double Cab Rebuild Thread

14th Oct 2021 9:46am

nosnibod

Member Since: 15 Aug 2007
Location: West Midlands
Posts: 370

1998 Defender 110 300 Tdi SW Bronze Green

And just to add to that - make sure you do the adjustment with the engine running. Dave
Green Goddess - 1998 Defender 110 300tdi

14th Oct 2021 10:00am

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20339

Agree with all of the above, and the reason for adjustment with the engine running is due to the slightly increased voltage with the alternator running and engine running.

$W33T $0U7H3RN $UG4R
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14th Oct 2021 12:04pm

scotty38

Member Since: 21 May 2011
Location: Lincolnshire
Posts: 571

Thanks all much appreciated, will have a look and a play at the weekend.

14th Oct 2021 12:20pm

scotty38

Member Since: 21 May 2011
Location: Lincolnshire
Posts: 571

Thanks again everyone, adjustable flasher fixed it....

16th Oct 2021 8:06am

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