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18th February 2017, 06:03 PM
#1
Legendary
Help with light bar wiring needed
Just wired in a 42"? Light bar , I have wired it into the relay terminal that supplies power to the two front spotlights .
Turned on high beams and lights worked for about two seconds and blew the fuse ( glass 15 amp) , checked wiring , all ok found another 15 amp fuse and same again after about two secs the fuse blew .
Polarity is correct but I now think maybe I need a bigger fuse to power both the light bar and spotties at the same time .
Does anyone know if this is correct or have I got a problem using both sets of lights , main power wire to relay is fairly thick and is yellow , which I've seen lots of the same kit around .
Will see what happens if I disconnect one or both spotties I suppose that could confirm my theory .
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18th February 2017 06:03 PM
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18th February 2017, 06:20 PM
#2
Patrol Freak
i think you need to find out how much your spotlights draw, and the light bar. ( V=IR should help)
if its worth doin its worth over doin
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GQtdauto (18th February 2017)
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18th February 2017, 07:23 PM
#3
Legendary
So tried with both spots disconnected just lightbar , no problem , one spotty also ok but run all three the fuse pops .
IMG_7272.JPGIMG_7273.JPG
Wires to the spots are very thin , I am removing the spots from the bulbar to try and improve cooling performance , if they won't fit up top I won't be using them at all again , I also have two eight inch ? LED spots and if I need more light it's either them or aircraft landing lights because of their power and size .
Thanks for your advice Garett.
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18th February 2017, 07:29 PM
#4
I would put a new seperate supply, relay and fuse for the light bar. Existing supply and relay may be sized just to handle spots. Don't just put a bigger fuse in because you may then burn out the relay or worse the wiring.
Btw. what are the exisring spots?
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GQtdauto (18th February 2017)
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18th February 2017, 07:38 PM
#5
Looking at pics I would say the LED spots will use a lot less than your existing spots. Should be able to run LEDS and light bar without blowing fuse.
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GQtdauto (18th February 2017)
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18th February 2017, 08:01 PM
#6
Legendary
I'm not sure what brand the spots are , were in it when I bought the car , has been done by a sparky .
Just waiting till dark to try them out , we have lots of Roos where we live , usually one or two on road dead most mornings .
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18th February 2017, 10:34 PM
#7
Don't be lazy just put in a new relay fuse and seperate switch it's not worth the risk and you may wish to turn off the light bar when approaching big signs as it gets blinding.
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GQtdauto (18th February 2017)
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18th February 2017, 10:42 PM
#8
Legendary
Yep that's me lazy as , checked out the light just before and wow not sure I need the spots anymore .
Never knew the light bars were that good .
If I do move the spots up top I will run a new relay and wires just in case although that .22 magnum cartridge sure makes a good fuse .
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19th February 2017, 08:38 AM
#9
Originally Posted by
GQtdauto
Yep that's me lazy as , checked out the light just before and wow not sure I need the spots anymore .
Never knew the light bars were that good .
If I do move the spots up top I will run a new relay and wires just in case although that .22 magnum cartridge sure makes a good fuse .
Good choice for fuse. Gives audible warning when it blows.
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GQtdauto (19th February 2017), juzzs8 (9th March 2017)
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19th February 2017, 08:49 AM
#10
Legendary
Great minds think alike , they also come in packs of 50 .
If needed I can convert my maxi fuse to 30.06 as well .
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