Hi guys , my brother's quad brake lights ain't working. Done the basics and changed bulbs but only tail lights work no brake.

So inspected a little further and see the wiring loom has been hacked a little in the past so doesn't really seem to match up to the manual I was looking at unless there's a different manual for the 2014 version?

I'm just trying to figure out what wires go to where and what should have continuity and what voltage and ground.

As far as I can tell it looks like there is a small brake lever switch on the front brake. 

Checked continuity of the switch contacts but nothing so presumed this was the fault . I then put a joing cable on the 2 leads coming off but still no lights?

I've traced both these cables and they both go to the middle of quad . I get continuity on each cable.

I presume these would have gone into some form of connector but it's been hacked off and joined to a brake sensor attached to a spring . This looks like it's seen better days so I've removed that and again tested lights with and without a jumper wire and still nothing .

I also noticed a small 2 pin plug disconnected in the same area and this looks like it's into the back of the brake hydraulics. I presume this is a hydraulic pressure switch?

I've checked continuity from the two prongs on the brake bulb to the wires in the centre joint and one has continuity.

Any ideas what/ where to test/ bypass next   

Fuse is fine
Brake relay seems okay , but swapped with another just in case .

Is there any diagrams of the wiring loom solely for the brake system electrics as there must be something I'm missing .


Also it seems like there is continuity from both the negative and positive battery terminals of the battery to the chassis ?  It's been a long day so I might be missing something obvious. I presume if there was a short it wouldn't run or fuses would be blown.

Cheers

[2015 Z Force 800 53/Trail EPS]

Generally, brake lighting are very much alike across many models however there are some differences between the EU versions and the US versions. The link below will take you to my manual on the CForce 800 11-17. It has both versions of the wiring diagram in it so..that should get you started. Probably something simple..like rodent damage somewhere. Link good for 24 hours some download it soon. Good luck

https://acrobat.adobe.com/link/review?uri=urn:aaid:scds:US:667fcd1b-34da-4f0c-a8d8-abc90af37d83