what size relay yall suggest?
#1
what size relay yall suggest?
Howdy yall, i just bought two off road lights for behind my grill and i wanna hook em up to a relay, what size ampage wise do you guys suggest? i know that i have a 50 layin around in the garage! thanks for the input.
EDIT: they each pull 100 watts, so 200 total
EDIT: they each pull 100 watts, so 200 total
#2
Resident light whore
Originally Posted by tuckerboynton
Howdy yall, i just bought two off road lights for behind my grill and i wanna hook em up to a relay, what size ampage wise do you guys suggest? i know that i have a 50 layin around in the garage! thanks for the input.
EDIT: they each pull 100 watts, so 200 total
EDIT: they each pull 100 watts, so 200 total
#5
Resident light whore
Originally Posted by tuckerboynton
it comes with an in line fuse, but everything i read online said to use the in line fuse and a relay! maybe the thing you were looking at was the switch ahah
#6
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Old Red SCrew (12-19-2012)
#7
Complete Asshat
Amps = Watts / Volts
? Amps = 100 Watts / 14 volts
? = 7.14 A
Each light will pull 7.14 Amps of power when the truck is running. Ish A little bit more when the truck is off, as you will only be drawing power from the battery, which will be closer to 12.5 - 13 volts. So to be safe, say 10 amps a light. So times 2 lights, means switch it with a 20 amp relay, you can go as high as you want, as long as your inline fuse is only rated for max 20 amps. 10 amps if you're fusing separately, which you shouldn't, but it can be done.
wire sizing you can look here.
http://www.windsun.com/Hardware/Wire_Table.htm
Part you want is size:
#12 = 6.6 feet max.
#10 = 10 feet max
#8 = 16 feet max
? Amps = 100 Watts / 14 volts
? = 7.14 A
Each light will pull 7.14 Amps of power when the truck is running. Ish A little bit more when the truck is off, as you will only be drawing power from the battery, which will be closer to 12.5 - 13 volts. So to be safe, say 10 amps a light. So times 2 lights, means switch it with a 20 amp relay, you can go as high as you want, as long as your inline fuse is only rated for max 20 amps. 10 amps if you're fusing separately, which you shouldn't, but it can be done.
wire sizing you can look here.
http://www.windsun.com/Hardware/Wire_Table.htm
Part you want is size:
#12 = 6.6 feet max.
#10 = 10 feet max
#8 = 16 feet max
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#8
Amps = Watts / Volts
? Amps = 100 Watts / 14 volts
? = 7.14 A
Each light will pull 7.14 Amps of power when the truck is running. Ish A little bit more when the truck is off, as you will only be drawing power from the battery, which will be closer to 12.5 - 13 volts. So to be safe, say 10 amps a light. So times 2 lights, means switch it with a 20 amp relay, you can go as high as you want, as long as your inline fuse is only rated for max 20 amps. 10 amps if you're fusing separately, which you shouldn't, but it can be done.
wire sizing you can look here.
http://www.windsun.com/Hardware/Wire_Table.htm
Part you want is size:
#12 = 6.6 feet max.
#10 = 10 feet max
#8 = 16 feet max
? Amps = 100 Watts / 14 volts
? = 7.14 A
Each light will pull 7.14 Amps of power when the truck is running. Ish A little bit more when the truck is off, as you will only be drawing power from the battery, which will be closer to 12.5 - 13 volts. So to be safe, say 10 amps a light. So times 2 lights, means switch it with a 20 amp relay, you can go as high as you want, as long as your inline fuse is only rated for max 20 amps. 10 amps if you're fusing separately, which you shouldn't, but it can be done.
wire sizing you can look here.
http://www.windsun.com/Hardware/Wire_Table.htm
Part you want is size:
#12 = 6.6 feet max.
#10 = 10 feet max
#8 = 16 feet max
#10
Senior Member
If you need the schematic for hooking up your relay, I have a couple pics in my pictures on here under the service manual section of my page.
I would use the 30 amp Bosch 5 terminal style relay. You can buy them cheap on ebay. I bought 10 with harnesses for 14.75 shipping included. My local auto/electric supply wants about 8 bucks a set. This is one of the most common relay set ups and can be used for any thing that pulls high volume of power and needs a constant source.
I would use the 30 amp Bosch 5 terminal style relay. You can buy them cheap on ebay. I bought 10 with harnesses for 14.75 shipping included. My local auto/electric supply wants about 8 bucks a set. This is one of the most common relay set ups and can be used for any thing that pulls high volume of power and needs a constant source.