Mystery Box

[Evilgoat]

J Reg 200TDi
This is on the rail above the pedals, 6 pin connector. Plug goes right into the main loom. The box is ally with a heatsink so its designed to deal with some power and its a factory fitted unit.

Any ideas? Its disconnected and everything seems to work.

[Rossko]

Check the wire colours against a wiring diagram.  Headlamp dim/dip perhaps?

[Evilgoat]

Check the wire colours against a wiring diagram.  Headlamp dim/dip perhaps?

That would make sense in som ways. Will fire rave up later.

[L90OOK]

I have exactly the same on my RRC.  If you plug it in the lights are on permanently...I haven't bothered to check what it is though  :oops:

[dave_2A_2.25Turbo]

I have exactly the same on my RRC.  If you plug it in the lights are on permanently...I haven't bothered to check what it is though  :oops:

typical symptom of a knackered dim-dip unit on the mk3 cavaliers so that looks like a good bet. No dim dip on mine, so I might have a poke around and see if mine's disconnected too.

[Range Rover Blues]

Pretty sure it's the dim-dip.

[Evilgoat]

Niel rewired the lights so its a safe bet thats what it is.

Trouble is I had light trouble tonight. Put main beam on and got sidelights on one headlight, both sports and hi beam on the other. Not knowing how this is all wired makes it a real pain the proverbials. It turned out to be a bad earth on the bulb holder but I might look to restoring the LR wiring or rewiring the whole system. I dont like repairing things when I dont know how they are put together. Last time I had to do that I got treated to a 9Kv shock from the HID lights on the Audi :shock:

[Niel]

Niel rewired the lights so its a safe bet thats what it is.

Trouble is I had light trouble tonight. Put main beam on and got sidelights on one headlight, both sports and hi beam on the other. Not knowing how this is all wired makes it a real pain the proverbials. It turned out to be a bad earth on the bulb holder but I might look to restoring the LR wiring or rewiring the whole system. I dont like repairing things when I dont know how they are put together. Last time I had to do that I got treated to a 9Kv shock from the HID lights on the Audi :shock:

Quite understandable.

It's the dim dip unit as you've worked out.

Lights are simple, col. switch is std. Relays on system carry the load to avoid switchgear burnout, something the 200 disco's suffered from.

Wired as Dip on = dip relay on

Main beam on = 2  relays on, 1 M/B H/L & 1 spots, and fog relay isolated

Fog relay only works with dipped headlights and fog switch on, goes off on main beam as the spot-light relay that feeds the spotlights is a change-over type (they all are to allow interchange should one fail) which feeds the fog light relay when off, simple relay logic

All standard wiring is still inplace incase of need, just disconnect relay fed connector from headlight bulb and put std. connector on. there are two additional fused spotlight feeds (without fuses) from the spotlight relay as I ran 2 extra spots during the winter.

I can draw you a diagram if it'd help.

Niel.

[L90OOK]

Niel rewired the lights so its a safe bet thats what it is.

Trouble is I had light trouble tonight. Put main beam on and got sidelights on one headlight, both sports and hi beam on the other. Not knowing how this is all wired makes it a real pain the proverbials. It turned out to be a bad earth on the bulb holder but I might look to restoring the LR wiring or rewiring the whole system. I dont like repairing things when I dont know how they are put together. Last time I had to do that I got treated to a 9Kv shock from the HID lights on the Audi :shock:

You think you nahe wiring gremlins...I turn my stereo on & the lights come on  :shock:  :roll:  :lol:

[Evilgoat]

Niel rewired the lights so its a safe bet thats what it is.

Trouble is I had light trouble tonight. Put main beam on and got sidelights on one headlight, both sports and hi beam on the other. Not knowing how this is all wired makes it a real pain the proverbials. It turned out to be a bad earth on the bulb holder but I might look to restoring the LR wiring or rewiring the whole system. I dont like repairing things when I dont know how they are put together. Last time I had to do that I got treated to a 9Kv shock from the HID lights on the Audi :shock:

You think you nahe wiring gremlins...I turn my stereo on & the lights come on  :shock:  :roll:  :lol:

Seen that before. Stereo/wiring on the back has an issue and is feeding +12v into the illumination circuit.