Found some random spade connections under the drivers seat

So upon trying to find out why my hand brake light doesn’t come on the dash I found the cable is plugged onto the handbrake lever but other end that goes under the drivers seat isn’t connected to anything it just has a black connector on the end. So that’s point 1.
Point 2 I found another green wire with spade connector attached with a black heat shrink over it any ideas what this is?
There is a spare spade connection on the circle thing under the drivers seat - what’s this for?? Should I plug the green wire onto there?

The green/black trace wire usually is the sender to gauge wire. The second connector on the sender should be the low fuel warning light 'switch' usually a white/grey trace wire IIRC. Black earth. The handbrake wire should be White/Yellow trace.

Wiring diagram here:

Defender wiring diagrams - Defender Forum (1983 - 2016) - LR4x4 - The Land Rover Forum

Thanks mate.
So the green wire is possibly the old reverse light wire as the last owner had a new reverse light fitted above the door and this was rewired.
My fuel gauge/Oil is working fine on the dash - so the sender unit has connections on the 2nd and 3rd spade connection but not the first? So should I stick the black earth onto here?
So looks like Im missing the connection between the dash and the hand brake wire then??

Ah sorry there is only 2 connections on the fuel sender unit. https://www.lrukforums.com/threads/fuel-sender-wiring.20926/

So I have spare black wire.....suppose I could connect to the hand brake lead spade connector and see if my dash light comes on when the hand brake is engaged.

karlp606 said:

Thanks mate.
So the green wire is possibly the old reverse light wire as the last owner had a new reverse light fitted above the door and this was rewired.
My fuel gauge/Oil is working fine on the dash - so the sender unit has connections on the 2nd and 3rd spade connection but not the first? So should I stick the black earth onto here?
So looks like Im missing the connection between the dash and the hand brake wire then??

Click to expand...

Your photo shows two wires (both black?) attached to the sender. If your gauge works don't attach anything else. The spare terminal might be for the low fuel warning light.
It sounds like you are missing the wire from the dash light to the hand brake.

Sorry yes so the sender is fine, all gauges working fine.
Looks like I have that black wire with a black bullet connector spare and a missing hand brake cable to the dash :/

This one
https://www.landyzone.co.uk/attachments/04fb4fc5-97d6-4f78-b939-eb35f8bd26e0-jpeg.245856/

Should I try connecting it to the handbrake lead?

karlp606 said:

Sorry yes so the sender is fine, all gauges working fine.
Looks like I have that black wire with a black bullet connector spare and a missing hand brake cable to the dash :/

This one
https://www.landyzone.co.uk/attachments/04fb4fc5-97d6-4f78-b939-eb35f8bd26e0-jpeg.245856/

Should I try connecting it to the handbrake lead?

Click to expand...

In a word - No. Don't guess, test. That what I was always taught. Test the wire, if you don't have a multimeter a bulb and two pieces of wire will check if its live or not. To me it looks like and earth. Trace it back, see where it attaches. The handbrake wire should be white/yellow trace.

Great thanks dude - I'll dig out my multimeter and test if theres any voltage