wired for sound!

[honstan3]

hi to all, i wish to extend the rear indicators,on my 400/4, and im not to sure as to what amprage(excuse the spelling mistooks!) the wiring/cable should be?, i recently purchased some mini reels of cables from halfords, but as you can guess,plenty of amprage types. thanks.honstan3.

[Lobo]

Hi Honstan..

Each indicator bulb will be about 5W, and given Volts x Amps = Watts you'll be needing cable of a minimum 0.5A rating......

BUT... (& check your fuse holder / owners manual) the fuse on this circuit is either rated at 7A or 15A... really meaning you should choose a wire rating higher than this so that the fuse melts first before any part of the indicator loom.

To check simply set the indicators going & pull the fuses in turn... when they stop you've found the circuit. If they're on the 15A circuit choose a wire rated better than 15A.... if they're on a 7A circuit choose a wire > 7A. Sorry can't be more specific... no access to a decent wiring diagram right now.

Hope this helps.

[honstan3]

many thanks for the advice, lobo, cheers.honstan.

[tom400f]

Simon - you sure about 5W ? That is a tail lamp (with brake light often 18 or 21 W in the same bulb).... indicators are also 18 or 21 W (can't remember which)

[Lobo]

Aye carrumba! Quite right Tom, written at midnight after a few beers!

To correct myself Honstan the smallest wire rating you could use would be about 2A assuming an indicator lamp @ 21W. Sorry.

Rest of the 'fuse' ramblings stand.... ie choose wire rating better than fuse rating.

Thanks Tom,
Simon.