My Patrol must be on drugs....

I would take the earth back to the battery, or set a junction box that is earthed to the battery, and take all the extras from there.

I will try a better earth...

Actually, on re-reading your post, I'm a bit confused why you'd be earthing to a dash board bolt anyway (or is your relay inside the vehicle?).

The wiring I would have thought, would have seen the following apply:

Relay has 4 posts:

1 goes to the light/s
2 goes to the Battery + terminal
3 goes to the Battery neg terminal (or another very good earth point)
4 goes to switch on dash board.........other side of switch goes to the high beam wire (I usually splice it in just behind the headlight plug itself). This wire does not need to be of a very high gauge (speaker wire would do).

The POS & NEG must be of very good quality and heavy gauge, as must the one that goes to the light/s. It's best to run 2 separate wires, one to each spottie.

Sorry if it sounds like I'm talking chit (most blokes on here are used to me doing that by now anyway).

Cheers

Roachie

Roachie, I say you are dead right! The switch should not be earthed. The Power should come to the switch and then when switched on continue to the relay. I have always connected into the high beam wire inside the steering column and from there through a switch on the dash and then onto the relay. I either earth the relay direct to the battery or run the earth wire to the bolt that holds the relay to the body.
Cheers tony

I always thought there was a couple of ways to hook up relays...."negative switching" which is the way i have done so and "positive switching" which is as Roachie has done so...
But i will definately check my earths on the weekend..

See diagrams...

Hey JD,
Please be careful of posting your "proper" email addy on this open forum. Apparently there is some cyber-gizmo known as a spider/crawler or some bloody thing and it scrolls though sites like this one looking for email addy's to then send out heaps of spam and krap.

I believe it's best to advise people of your email addy by:

jd59ATaaptDOTcomDOTau sort of thing

Hi Roachie,
Noticed people doing that but l was un aware of the reason,thanks for taking the time to let me know.Merry Xmas.
JD

As Bullwinkle said,
The chassis is not earthed to the body or the battery. So if you connect the earth of the spotlights to the bullbar the earth return path is via the fuel guage wiring. Found this same problem on my 98 GU, any time I had the lights operating on the trailer as the earth from the trailer socket was attached to the chassis. This problem really became an issue when I had the van on with the extra clearance lights etc. The guage would drop from full to around 1/4 tank.

I have fitted 3 chassis / body ground straps, no problem any more.