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Harriec

Member Since: 06 Jan 2024
Location: Sussex
Posts: 6

2009 Defender 110 Puma 2.4 SW Epsom Green

Electrical niggles and cable quiz

Hey...I've been having a few electrical gremlins.

I was driving a few days ago and could smell burning. There was smoke coming from the headlining. After investigating I found that the rear interior light cables had melted. The fuse finally popped. So I disconnected the light etc and made it all safe. I have pulled the cables and cleaned up etc. however if I put a new fuse in, it sparks and pops as soon as I put it in. So I assume it's shorting. I have unplugged, the interior lights, radio and clock..but it's still shorting. As far as I can see...the earth's look good (checked under transfer box and on the bulkhead.

Also getting the double horn when I lock the truck. I have checked and cleaned all the door and bonnet switches so have no idea on that one!

Also whilst looking I found this cable not connected...it comes through with the crank sensor cabling. Not sure where this one is supposed to go? It's hanging around the gearbox.
Any ideas??

2009 2.4 puma 110

13th Apr 2025 9:20pm

jbcollier

Member Since: 29 Apr 2024
Location: Edmonton AB
Posts: 225

2009 Defender 110 Puma 2.4 SW Alpine White

Get an incandescent headlight bulb (35 to 60 watts) and wire it up with leads. Plug it into the fuse connections. It will glow bright while the circuit is shorted and dim when it is not. It will also limit the current flow so no more wiring is damaged. Place the bulb where you can see it and go looking. Wiggle, pull and prod until the light dims and you have found your short.

14th Apr 2025 2:57pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17731

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

Re: Electrical niggles and cable quiz

Harriec wrote:
I found this cable not connected...it comes through with the crank sensor cabling. Not sure where this one is supposed to go? It's hanging around the geabox.

A picture would help, did you mean to post one?

14th Apr 2025 3:54pm

Harriec

Member Since: 06 Jan 2024
Location: Sussex
Posts: 6

Sorry...yes I thought it had uploaded. Thanks for the advice. I think it may be the crankshaft sensor with regards to the starting issue. I took the plug out and cleaned connections, put it back and now it seems to be fine.
I've also found the short from the wiring (cut the loom in the pillar as it was damaged anyway). So now I have a new fuse in and my radio and clock are ok but the front interior light not working. Also it keeps double beeping on locking (assume faulty door switch) checked and they all seem to be working. It all just seems a bit strange...maybe separate problems but a bit suspect that they are all happening at once. Now I have that fuse in I can at least plug in the OBD.
At least it drives safely now. Just be nice if I could lock it without everyone staring...

I would like to know where this spare plug goes though...sorry the pics not too good. I can try and get a better one tomorrow.

16th Apr 2025 9:01pm

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