problem with spotlights

No doubt you have re-traced all your wiring.

what type of lights?

There could be a short inside the light that is causing the fuse to blow.

Also make sure none of the pins/wires on the relay are touching each other. These can easily bend.

You obviously have a short circuit.

Diconnect the lights from the relay (87/87a), check if the fuse blows if the relay is switched on.

If no problems, check the wiring to the lights and inside the lights, make sure there is good isulation all the way (use a multimeter if you have one).

Try unplugging 87 & 87a, turn everything on and test at the relay. If every thing is alright chances are you have earthed out between the relay and your spotlights or have a fault in one of your lights.

Do you have a toggle switch on them and if so is it an illuminating one? If it is is it earthed?
Cheers

The spot lights are aaa brand i bought them on ebay,
Iam using a 10amp black toggle switch.
I have tried diconecting one of the lights and it was still blowing fuses so when i get home from work i will try disconecting #87 & 87a

Thanks

What sort of vehicle?

We were only talking about this on the weekend (Members Lucy and Pesty were at my place for tea last night......I know, I know, they are both cruiser nuts and you're wondering what the hell I was thinking letting them into my house.......I love a challenge and these 2 blokes are VERY challenging!!! hahahaha)

Anyway, apparently cruisers have their high beam earthed in a funny way..... Postive to earth if that makes any sense!!!

Just a thought.....if your vehicle is a cruiser.

Cheers
Roachie

Hi hobo, for a start, you have a changeover relay not a headlight relay.

You can still use it but you will have to bring both driving light power wires off pin 87.

Next try disconnecting pin 86 off the relay and see if you still blow fuses.

If the fuse doesn't blow then before you hook up the wire to the relay again, you will have to work out whether you vehicle has positive or negative switching headlights and the do your wiring for the relay to suite.

Cheers.

might find that the headlights are negative switched.........

Will one spotlight work on it's own
I always use a seperate relay for each spottie, that way you won't have power loss.

Hi there,

I would use two relays for starters and then test the wiring in each lamp. As they are non-branded lamps try replace the internal wiring inside the lamp should be fine after that and then you will only need a 4 pin relay much easier to play with!

cheers
OsherG

hi
everyone has coverd the main points but your switch is not high enough amperage asuming they are 100 watt lights =200watts

voltage divided into wattage equals amperage
12 200 16.6

i would use a 20 amp switch otherwise it is possible to have a dash fire and take out other wireing in the process and it will happen at night

cheers steve

Thanks to every ones help and tips,

I have tracked the problem & it was a short inside the light itself, i also will be changing my toggle switch to a higher amp switch.

Thanks