20-12-12, 08:05 PM
You can mount the relays anywhere there is room for them, the dryer the better. If you were increasing the length of wire greatly there would be a slight power drop. But by mounting the relays nearer to the battery you will have a shorter run from battery to the relays and a longer run to the headlamps, so more or less no change. You will probably have a longer run for the wires controling the main beam relay from the original main beam light socket (R.H. side), but as this is only carrying a very small current it won't matter anyway.
The reason I used 40 amp relays is because that is what I could easily get hold off. (From Maplin). Each relay is handling nominaly about 10 amps, maybe a bit more on switching, when the filaments are cold, so anything from 15 amps capacity would probably have been o.k.
The reason I used 40 amp relays is because that is what I could easily get hold off. (From Maplin). Each relay is handling nominaly about 10 amps, maybe a bit more on switching, when the filaments are cold, so anything from 15 amps capacity would probably have been o.k.