anyone have led light bars on there 720? need some advice maybe some photos?

[btd19m]

ive been looking at something like this (50 inch) or 2 6 inch light bars where the spot lights were before i bought her. its all wired up already for spot lights.

[btd19m]

i do have a set of hid light force 240's but im worryed like the spot lights it had they will be to much for the battery/alt to handle.

[Fat510]

A lot of people run those on their trucks. even the older sas Toyotas and they work fine. Get a higher amp alternator and you should be fine

 

Oh, and just buy the Cree led ones off ebay. The name brand ones like KC or off summitracing.com are the same, just $200-400 USD more

 

 

I'm thinking of getting a 24 in for my wagon because the brush guard I put on it blocks the high beams, so the center of the road is darker than the sides

[btd19m]

yeah. i have a stretch of road about 30km between work and my house and every night almost there's at least 10-15 cows and a bull or two on the highway. any ideas on alt? i have 2x 100 watt light force lights. it had 2x 35 watt lights on it but for some reason they would drain the battery. the light force lights are just bad. not even 10 minutes and the lighter socket stops working and wont start working till about 10 minutes after i turn them off and they go super dim. second set of lights on my 720 don't work sadly. its earthing something chronic.  in my rebuild thread i brought it up but i looked them over and stuck a volt meter on them and they get .86v each. the normal lights are on 12.1v bit upset about that at the moment. cant seem to find the problem yet. trailer plug earths as well. it has 11 wires out the back on a 5 pin plug. 2 from the dash 2 from the head lights. 2 from the cluster. 2 for for each blinker and i think the 11th wire (brown) is ground. i have running lights on my trailer so the head lights bring on the running lights at night. only ever towed it one time with the datsun and for less then 10m with no load and the jockey wheel down on the trailer.i was looking at the cree 50 inch bars. i know a guy at work who is selling 4 of them for 170$ each with the loom only reason hes selling is the bars are 240 watt bars and his alt cant handle it.

[Fat510]

Pathfinder or d21 hardbody alts are around 70-90 amps

 

Also think about a second battery

[millican]

What's the CRI of those? I'd like to avoid deer too and would also like to see more lights for road use with a higher color rendering index than HID or the bluish (6000K or so) LEDs that are used most often because they're cheaper and nobody seems to care if the light is crappy if it just puts out more of it. (the sky is blue, but daylight and deer aren't) It seems that all the lights with better color rendering are used in household lights more than automotive unfortunately, but you can replace the individual diodes if you're patient and have enough solder and flux.

Are the additional lights you've tried on a relay of their own?

[Minesmith67]

I have a 51 I mcg I'm about to put on my truck I will post pics

[Fat510]

What's the CRI of those? I'd like to avoid deer too and would also like to see more lights for road use with a higher color rendering index than HID or the bluish (6000K or so) LEDs that are used most often because they're cheaper and nobody seems to care if the light is crappy if it just puts out more of it. (the sky is blue, but daylight and deer aren't) It seems that all the lights with better color rendering are used in household lights more than automotive unfortunately, but you can replace the individual diodes if you're patient and have enough solder and flux.

Are the additional lights you've tried on a relay of their own?

 

 

The ones off of eBay look about 5500k-6500k. My buddy's has 3 watt leds

[Stoffregen Motorsports]

The LED light bars don't pull a lot of power.

[Minesmith67]

Don't buy alt. Led lights only need 5 volts to run you can ruin them off a dead battery which I have done

[millican]

Did you mean "run" instead of "ruin"? You're still right in both cases. That is true that one of the LEDs in those types of lights needs only a few volts (around 3) to run. 4 LEDs in series will need the sum of those voltages, around 12. Think of these four LEDs as one group. Heat and current burn out LEDs, so the current needs to be limited. There is probably a resistor for each of these groups of 4 limiting the current. A light bar just has several of these groups in parallel. Often, the resistors that limit the current draw more power than the LEDs themselves, but more efficient drivers cost around $15 vs a few pennies for resistors. If you need several, the cost adds up. Putting more than an amp or so, which even a dead car battery can provide, to an LED without a resistor or driver will definitely ruin it.
LED lighting has so much potential that's not being realized in the automotive industry. I can hardly wait to see what products hit the market for our cars when the market demands not just any light that's bright, but good lights as well. I'd like to see some artistic uses too (maybe some subtle amber light strips under the out-turned lip of a Datusn truck?) rather than what some manufacturers are doing - just throwing in some LEDs in the corners because it's a cool thing to do the way boobs get thrown into Game of Thrones episodes at random times. Wait. Maybe that's not really a bad thing after all.

[Huntin720]

2x100watt bars will draw 16amps total. Your battery fully charged is probably worth 40-55 Amp Hours. Which means that over a 20hr test it could drive 2amps for 20 hrs before dropping below the nominal voltage (usually around 10.5v). If the dropoff was linear then you could say that the battery would drive your lamp bars for 3 hours. It isn't linear though, capacity drops with increased rate of draw. So if we want to play it safe we cut the number in half (your battery manufacturer may have a chart that better predicts this) so you should be safe driving these LED's for an hour at least. That is of course if the only draw on the battery is the LED's. But the math also ingores the charge from your alternator. Someone else will have to chime in and let us know how many amps your alternator should provide and how many your motor is using.

 

If two 35watt lights drain your batt quickly then I'd check out wiring. 2x35w=5.8A So you should be able to drive them for hours. You may have a short somewhere. Or you may need a new battery.

[datrod]

I freakin hate those light bars. All the flat billers here run them on lifted trucks. Why the fuck do they need them to run down the fwy ???  I understand why btd would want one. But for the city they are just stupid.

[harlow426@msn.com]

LED marker/turnsig conversion in front bumper...love em! H-4 conversion housings outer headlights. My co-pilot is eye-balling you!

[hellaflushed720]

I'm mounting a bumper, grill, and reverse light led bar lights when finished will provide pics of the update

[hellaflushed720]

Also I do have another truck with led light bars if you want a comparison of before an after as far as light output from the cheaper led bars

[Stoffregen Motorsports]

I freakin hate those light bars. All the flat billers here run them on lifted trucks. Why the fuck do they need them to run down the fwy ???  I understand why btd would want one. But for the city they are just stupid.

I believe they are illegal to run on road in a lot of states. Most maybe.

 

They are definitely awesome off-road though. Daytime anytime...