charlie99
VIP
Number of posts : 11701
robin 55 watt draws 55/12 = around 4.5 amps at 12 volts (altenator runs at 13.6 ish volts so actual wattage - current increases ) now that's well and good but if you use 5 or 6 amp cable there is some amount of voltage drop by the time it gets to the headlamp globe (heating effect etc ).
note the standard high beam is 60 watt .
this in itself is not bad ....but ....most globes these days are halogen types and have a critical "halogise " voltage ...
below this critical voltage the effective light output is significantly reduced.
my rule of thumb is double the cable size.
I figure it this way .1 mm for every amp of ac current ...but we are talking about dc current not an alternating one, so double it ,,cant hurt and the setup costs differences are very small . I would recommend 1.5mm cable as a minimum
and on the occasion of using the flash button you are well and truly covered .
some folks use higher wattage types any how ...like me ...my eyes at night aren't as good as they once were and every little bit helps.
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'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
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bits and pieces from many kind friends across the k100 world ...with many thanks ..
1987 k100rs ######## "Red" - (red sports rs TWB style )
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