Eddie I have just had a look at your ebay link, and see you list relays for fuel pump and fan.

Do you not use relays for headlights like they do on the original Sierra looms?

Thanks

Gus

Loom
 

Hi Gus,
Yep your correct, i don't use relays on the headlights. Just on the Fuel Pump and Fan.
Regards
Ed

I assume then that the sierra switchgear is capable of handling the power of the lights, and rather than switching relay earths you are switching +ve's instead.

That's ridiculous, the sierra switches can't switch that sort of current reliably. Sorry but you are asking tiny switches with minute springs on the contact points to switch approx 7.5 amps at full voltage? Relays should always be fitted to the headlamps like Ford do, like Westfield do, like every manufacturer does. You get a pile of them free with your donor, they need to be used.

Sorry, forgot to add, my standard kit isnt designed to use the original Sierra light switches. I found that most people use aftermarket switches from CBS etc.. and these are more than capable of the current without a relay.

Obviously this can be changed per order. Hence why our looms are custom and are made to order depending on your requirements.
Regards
Ed

Thanks for clearing that up for me Eddie. I couldn't see how you could run that much power through the switches, if Ford couldn't originally.

I was just being nosey really as I am using the donors loom with all the unnecessary circuits cut out.

Thanks

Gus

I thought most builders use the Sierra switches with either the original Sierra loom or the original Sierra switches mated to a new loom ?,

I,ve used the latter example using a Premier wiring loom that does come with the relevant relays etc

cheers
andy