kingie chaser

Re wiring LED lights on tralier help

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Adrian, just an additional thought.  While you are working on tracing your cars 7pin plug tail light wire, it would be good if you hooked up your trailer to another car's 7pin connector (preferably one where you know everything is working).

If this test proves the boat trailer lights are fixed, then perhaps waterproof heatshrink over those Tpin connectors and you'll probably be done for years to come.

Maybe someone in your street has a tow bar with 7pin connector, or a raider lives near by. Not sure which area you live in, I'm Castle Hill way.

Cheers Zoran

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Yeh thats a great idea.

Not sure if I know anyone who tows but I'll have to contact a couple of mates & ask the question.

Thanks for the offer but Castle hill is a long way from Randwick!

 Sure I will find someone local.

Cheers again.

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Maybe there is a different fuse. From the intereweb

The fuse is located on a separate circuit right under the batter positive cover or hidden around the back of battery either way it is there near the positive post somewhere ( I do believe it will not be part of the normal fuse system- in a triton”

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Posted (edited)
16 minutes ago, raging said:

Maybe there is a different fuse. From the intereweb

The fuse is located on a separate circuit right under the batter positive cover or hidden around the back of battery either way it is there near the positive post somewhere ( I do believe it will not be part of the normal fuse system- in a triton”

You could be right as the towbar & wiring was done by a 2nd party even though the Triton was bought new from Mitsy.

They outsource some of the add ons like flexiglass canopy or other parts you want to add, I have the companies name on the compliance so I could also ask.

 

As mention by Zoran the vehicle tail light output is of concern but also independently testing the trailer lights will also give me some answers.  

 

The easy test is to plug the trailer into another vehicle, not sure I know someone with a 7 pin but Im also now researching if I can make my own testing unit from a 12v battery connected to a female 7 pin connection??

I have spare 5 core wiring, a spare 12V battery & a connector so its just a matter of working out how to set it up??

Not sure if its ever been attempted but I am looking at it in the interim while I try to find someone I know with a 7 pin connection.

 

 

Edited by kingie chaser

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I thought Flat 7 pin plug was compulsary now?

and usually only 5 pins in the 7 pin plug are used.

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1 minute ago, Mmg said:

I thought Flat 7 pin plug was compulsary now?

and usually only 5 pins in the 7 pin plug are used.

No idea, that's what I was given when I bought the car from new 5 years ago.

Funny though how though there is the 7 sockets but even the wiring from the car doesn't have 7 core wired that include reversing signal & service brake.

You would think if they are setting up a 7 plug outlet they would at least make all options available even if reverse signal & service brakes aren't  not really required in most situations!!

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47 minutes ago, kingie chaser said:

Im also now researching if I can make my own testing unit from a 12v battery connected to a female 7 pin connection??

 

Hi Adrian, 

You don't have to go to all the trouble to use a female 7pin connection.  

Take 2 lengths of wire. Connect one end of each wire to the positive and negative 12 volt source (a 12v battery, or a 12 v battery charger etc). If you have them connect an alligator clip to the other ends of the wire or just strip the plastic to expose  a bit of the wire. (Be careful not to let the wires touch as you will get a short circuit...)

Now connect or touch the negative wire to pin 3 (the Earth) on your trailer 7 pin connector.

image.png.c3b565a363470ce1de7d9ce05b0136fb.png

Keeping the Earth connected, touch the other wire (Positive) to the other Pins as per the diagram. You should see the respective lights turn on as you work your way around the pins. 

 

1. Yellow - LH blinker

4. Green - RH Turn

6. Red - Brakes

7. Brown - side markers, Tail lights, Licence plate light

Cheers Zoran

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Posted (edited)

If you really want to use your spare battery to test just buy a female 7 pin plug like on the back of your car.

glue it to the top of the battery and 

wire the earth of the battery to the center one. 3

then put a wire from battery to a 20 amp fuze holder then to each light pin=

Both blinkers, tail and stop. 4,1,6,7

when you plug your boat lights in= all lights should be on.

best test you could do and will only take 1 min

but best to test when you connect to car as plugs can be loose connections, and not make proper contact.

i use a very thin blade pocket knife to slightly spread the pins on the trailer plug, just open them 1mm, otherwse they can snap.

dosent hurt to give the pins a spray with WD40 either

Edited by Mmg

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Posted (edited)

Ive got 2 plugs in the back of my land cruiser.

it initially only had one and i needed to wire up an electric trailer brake for my car trailer.  so i thought i,d just add a whole new plug and incorperate a trailer brake wire. "(scratched ( elec ) into the towbar so i remember what one has electric brakes hooked up 😜)"

Now in going to add a reverse wire so i can run guide post lights.

that will be fitted to the fronts of both my boat trailer guide poats so i can see them when reversing in boat ramps at night. (With no boat on to retreve)

plus i can run the original boat trailer lights plus a second set on the guide posts. ( double precaution from some tosser running up my boats ass, 😆)

will add pictures later to show the concept.

 

IMG_7716.JPG

Edited by Mmg

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Posted (edited)
6 hours ago, Mmg said:

Ive got 2 plugs in the back of my land cruiser.

it initially only had one and i needed to wire up an electric trailer brake for my car trailer. "(scratched ( elec ) into the towbar so i remember what one has electric brakes hooked up 😜)" so i thought i,d just add a whole new plug and incorperate a trailer brake wire. 

Now in going to add a reverse wire so i can run guide post lights.

that will be fitted to the fronts of both my boat trailer guide poats so i can see them when reversing in boat ramps at night. (With no boat on to retreve)

plus i can run the original boat trailer lights plus a second set on the guide posts. ( double precaution from some tosser running up my boats ass, 😆)

will add pictures later to show the concept.

 

IMG_7716.JPG

P.s.

in case any new boaters are unaware=

it is illegal to tow without a yellow weight rated d shackle as pictured.

 

Edited by Mmg

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Posted (edited)

Start of fitting Reversing lights in guide posts

for me to see trailer in revision mirrors when backing in at unlit boat ramps with no boat on.

tinted windows dont help!

image.jpg

Edited by Mmg

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Close up

image.jpg

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Posted (edited)

Thats where im putting a fixed set of tail light on my small boats trailer.

its not on just the reflector reflecting the iphone flash.

image.jpg

Edited by Mmg

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Hi @Mmg

I understand  from your post below you added a second plug to power the electric brakes....

7 hours ago, Mmg said:

it initially only had one and i needed to wire up an electric trailer brake for my car trailer.  so i thought i,d just add a whole new plug and incorperate a trailer brake wire. "(scratched ( elec ) into the towbar so i remember what one has electric brakes hooked up 😜)"

Now in going to add a reverse wire so i can run guide post lights.

Most people facing this problem upgrade their 7pin plug to a 12pin plug - which gives you the extra poles to drive brakes and other equipment and accessories.   

image.png.d098ac94feebe10f181cdab381983b59.png

That's the path I went down for my electric / hydraulic brakes.  There is a standard wiring schematic for 12pins just like there is for 7pins. This approach keeps the vehicle wiring standard, in case you ever want to tow another trailer with brakes etc.  

BTW, using the 12pin plug, you can still plug in a standard flat 7pin plug with no problems - the top 7pin layout has not changed and accepts a 7pin connector. Thats how I  connect my box trailer to the 12pin plug on the car. 

Here's the wiring schematic:

image.png.eb5b391996d36e3721627e55767b82c0.png

Cheers Zoran

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Hi Zoran ,

can you plug 2 plugs in at once?

i did it so I can run 2 sets of lights at the same time, 

i already had a second female with wiring from another vehicle I de commissioned, 

so I used it , was an easy wiring job.

cheers marty 

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Lots of good advice been offered, but, one thing I have learned over a very long time of boating and messing around with trailer lights, is to just remove the whole lot and start again, it sounds dramatic, but in the end, it works, first thing, make sure your car plug is "standard" wiring, so you can tow other people trailers, and they can tow yours, if your lights are good, you can reuse them, but, all other wiring needs to be removed and replaced, do it properly and do it once! I know things can be repaired/patched, but in the end, it will bite you hard.

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+1 on that noelm.

Totally agree, other wise you will be patching all the time.

the more connections the more drama I recon.

 

 

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17 hours ago, Mmg said:

can you plug 2 plugs in at once?

Hi Marty, nope you cant plug 2 at once. One at a time 12pin or 7pin.  My comment was as per @noelm, if it was important to you to keep your car wiring standard so you can tow other trailers.

There's room on the 12pin so you could have run the other set of lights out of that,  but I understand that you already had another 7pin car plug so decided to use that. 

Cheers Zoran

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