farm truck light wiring

Anonymous-0 · Jan 30, 2010

I want to wire 4-100 watt driving lights on the one tonne chev bumper. I have the lights. Hella. There was old driving light wiring and a 40A relay already in the system, running 2-55watt lights tied to one wire from the relay. All wire is skimpy so I am moving it to 12 gauge. Any advice on wriing 4 bigger lights to one wire from relay? In a test on the old wires, it popped the little 10 amp fuse from the power source right away. Going to 30A there with 12 gauge wire.

old art · Jan 30, 2010

use #10 wire from batt to relay use a relay with heavy enough contacts to carry the heavy current of the load hope you have a large enough alternator to call the load and dont park with the light on battery will go dead fast lots of luck

oj · Jan 30, 2010

nothing stopping you running all 4 lights of a 40 amp relay, it should take the power (i have 4 x55watt lights on a 30 amp relay), 4 bulbs at 100 watts, 12 volts is 8 amps/light, so the relay will take it, you will need a bigger fuse tho. Biggest problem is voltage drop, get the relay as close to the lights as you can, and use the biggest wire you can find to power the relay, might want to put 2 relays in each running 2 lights, that way if anything fails you still have 2 operating lights, that"s the way i"d d it, then use a 20 amp fuse for each relay. I"ve had problems in the past with relay burning up from too much heat, so make sure you buy a good quality relay, Hella or Bosch seem to be the best.

farm truck light wiring

Anonymous-0

Well-known Member

old art

Member

oj

Member

Similar threads