just wondering if i ran the right size cable or not.
i used 4mm cable to hook up 4 x 100w spotties, wondering if is sufficent enough. any help would help ease my curious mind
cheers
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spotties
Moderator: -Scott-
4mm cable is only good for 15 amp, so its marginal for 2 lights, you will be getting voltage drop and resistance from heat in the cable if you are running all 4 off the one circuit and one relay.
Insufficient wiring is a good way to kill lights quicker, as well as not getting the best performance from them.
I have found the best way is to run a 10 amp feed and return to each light, narva make a real nice twin core with sheath cable for lights etc. in 10 and 15 amp etc. Run a large guage cable with fuse from the batt + to a relay with dual output terminals , from there run the 10 amp cable to the light and return the earth direct to the battery - . I have done them this way for the last 10 years or so, and all the lights i fitted in the workshop were done this way, no dramas at all with any of them. The wiring that comes with spotties is only just marginal and not worth using.
My 4 narva 170s on the jackaroo use an 8 guage feed from the batt to a dual 30 amp fusible link box, then 2 30 amp dual terminal relays running a 10 amp feed and return to each light back to the battery. No voltage drop there, and they are a lot brighter than people would think.
i added a pic where you can see the fuse box, relays and wire feeds off the batt, with the 4 earth returns coming back up on the left to the batt.
cheers Brad
Insufficient wiring is a good way to kill lights quicker, as well as not getting the best performance from them.
I have found the best way is to run a 10 amp feed and return to each light, narva make a real nice twin core with sheath cable for lights etc. in 10 and 15 amp etc. Run a large guage cable with fuse from the batt + to a relay with dual output terminals , from there run the 10 amp cable to the light and return the earth direct to the battery - . I have done them this way for the last 10 years or so, and all the lights i fitted in the workshop were done this way, no dramas at all with any of them. The wiring that comes with spotties is only just marginal and not worth using.
My 4 narva 170s on the jackaroo use an 8 guage feed from the batt to a dual 30 amp fusible link box, then 2 30 amp dual terminal relays running a 10 amp feed and return to each light back to the battery. No voltage drop there, and they are a lot brighter than people would think.
i added a pic where you can see the fuse box, relays and wire feeds off the batt, with the 4 earth returns coming back up on the left to the batt.
cheers Brad
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bj42turbo wrote:I agree with Brad on this one, better thicker wiring makes a huge difference, I upgraded the OEM wiring on my stanard headlights c/w relays I was amazed at the difference
Dazz
Where'd ya get that?
I used to draw everything out of one relay and thinner wires...
I run my spotties of individual relays and real thick cable.
They work much better now, overkill? Maybe.
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