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I thought I post this info here...
slcfj62 provided this info....
Thanks Erik.
Im sure someone out-there will benefit from this info down the road..
FJ60/62 headlight harness
"When Toyota designed the FJ60 (and continued the paradigm with the FJ62) they decided to supply the headlight 12 volts to what is normally considered the "common" in the headlights. (The headlights have three connectors. One connector is connected to both filaments and is referred to as the "common".) In most vehicles, the headlight common is connected to ground. The Toyota engineers decided to get clever and supplied the 12 volts to this common connector and then supplied ground to the other end of each headlight filament through the steering column HI/LO switch. Because of this, we have started calling this configuration "switched ground." This is technically correct, but an electrical engineer would call this "hot common"."
JW Evolution 2 LED's
"An LED is polarity sensitive (you can't reverse the ground and hot connections). A common hot configuration supplies reverse polarity to the LED headlight, meaning the hot and ground are reversed and the headlight won't light. This is the reason your headlight circuits must be rewired for a common ground configuration to use LED headlights."
Wired Wagon harness specific to the JW LED's.
"The harness will be wired to use the existing vehicle switching to control the headlights. The headlight ON switch with turn on the LOW beams. Moving the HI/LOW switch to the HI position will turn on the HI beams. It will do this by completing the path to ground (in the steering column switch) for the coil in the HI beam relay in the new harness. So, technically the HI beams are still turned on via the steering column switch supplying a ground path. The big difference is the new harness will be wired to supply common ground to the new headlights vs common hot as in the vehicle harness.
The new harness will also work with stock sealed beam headlights or H4 headlights for that matter, so you should be able to use any headlights you choose. ie: you won't have to buy a third LED headlight as a spare."
So much for plug and play eh.....
slcfj62 provided this info....
Thanks Erik.
Im sure someone out-there will benefit from this info down the road..
FJ60/62 headlight harness
"When Toyota designed the FJ60 (and continued the paradigm with the FJ62) they decided to supply the headlight 12 volts to what is normally considered the "common" in the headlights. (The headlights have three connectors. One connector is connected to both filaments and is referred to as the "common".) In most vehicles, the headlight common is connected to ground. The Toyota engineers decided to get clever and supplied the 12 volts to this common connector and then supplied ground to the other end of each headlight filament through the steering column HI/LO switch. Because of this, we have started calling this configuration "switched ground." This is technically correct, but an electrical engineer would call this "hot common"."
JW Evolution 2 LED's
"An LED is polarity sensitive (you can't reverse the ground and hot connections). A common hot configuration supplies reverse polarity to the LED headlight, meaning the hot and ground are reversed and the headlight won't light. This is the reason your headlight circuits must be rewired for a common ground configuration to use LED headlights."
Wired Wagon harness specific to the JW LED's.
"The harness will be wired to use the existing vehicle switching to control the headlights. The headlight ON switch with turn on the LOW beams. Moving the HI/LOW switch to the HI position will turn on the HI beams. It will do this by completing the path to ground (in the steering column switch) for the coil in the HI beam relay in the new harness. So, technically the HI beams are still turned on via the steering column switch supplying a ground path. The big difference is the new harness will be wired to supply common ground to the new headlights vs common hot as in the vehicle harness.
The new harness will also work with stock sealed beam headlights or H4 headlights for that matter, so you should be able to use any headlights you choose. ie: you won't have to buy a third LED headlight as a spare."
So much for plug and play eh.....