highbeamers

[JKeep2.5i]

Leo only sells 35w, I run 55w in all my HId's as that's what the oem post facelifts are.
More expensive... But worth it.

Yeah I thought low beams were 35w and highs 55w ? ( h4 or h7 globes??)

[t.renshaw34]

That's what alot of people think too. If you look in your owners book, they are H7 55w low beam too .

[JKeep2.5i]

And high beams are? I just thought the high beams would consume more power since they're puttin out more light..

[mihai]

And high beams are? I just thought the high beams would consume more power since they're puttin out more light..

Its not about putting out 'more' light, its about directing the light differently. The low beams have a cutoff and the projector lense (and reflector lenses in other cars) direct the light downwards. Whereas highbeams direct the light above the cutoff of the low beams and to the left and right of the car.

[t.renshaw34]

Exactly, and the high beams have a much bigger reflection surface if that makes sense. Resulting in more light directly infront of you (not down on the road like low beam) and to either side.

[JKeep2.5i]

And high beams are? I just thought the high beams would consume more power since they're puttin out more light..

Its not about putting out 'more' light, its about directing the light differently. The low beams have a cutoff and the projector lense (and reflector lenses in other cars) direct the light downwards. Whereas highbeams direct the light above the cutoff of the low beams and to the left and right of the car.

so essentially the low and high beam have pretty much the same globe its just how the light is projected??

[mihai]

so essentially the low and high beam have pretty much the same globe its just how the light is projected??

Well they are both 55W globes. So the light output is the same, just the way it is projected is different.

[JKeep2.5i]

just had a look in my owners manual it had for the low beam H7 55w 12v, then for the high beam HB3 60w 12v, I've just been looking on the phillips website for the diamond vision globes, the description is HB3 9005 DV 12.8V 65W P20d does anyone know if this will fit/work and will the difference between the stock HB3 and the philips diamond vision HB3 be a problem??
thanks

[Kekotic]

It's still HB3, the only difference is it's drawing more power.

[JKeep2.5i]

It's still HB3, the only difference is it's drawing more power.

i understand this i am a first year electrical apprentice

but what I'm getting at is due to pulling more power this will cause more heat, will it be a big difference or possibly affect the plug or light housing?

[Kekotic]

It's still HB3, the only difference is it's drawing more power.

i understand this i am a first year electrical apprentice

but what I'm getting at is due to pulling more power this will cause more heat, will it be a big difference or possibly affect the plug or light housing?

Bro...

I got HID's in there.

The answer is no.

[JKeep2.5i]

right just thought id try this if its no good ill change

but if anyone knows if i put a globe in that has 5w more than stock will this heat up/be problematic?

[JKeep2.5i]

bump!, does anyone know if i put new highbeamers in that have 65w/12.8v rating compared to the stock 60w/12v rating for HB3 halogen high beams, if this will cause any problems to wiring or the light housing??

I've done some quick maths and figured out that the stock high beams (60/12= 5) run on 5amps, compared to the new high beams i want to put in (65/12.8=5.078) run on 5.078amps. meaning there is a difference of 78mA, my question is will this make a difference? mainly to how the wiring is rated as i don't wanna cause any damaged to the wiring or light housing, i do know a little about this as I'm a first year apprentice electrician, however not being a auto electrician I'm not 100% sure, any info would be much appreciated

cheers Jerred.

[SegR]

78mA won't make a rat's arse of a difference. I'm not sure about your maths though. At the end of the day 65W is a 5W increase over 60W (8.3%) regardless of current & voltage. That's likely 8% more heat from the globe (though not necessarily if it's more efficient) and 8% more heat and load on the cable from the battery to the globe. I would hope there'd be enough margin in all of those components for it not to matter.

[imania]

78mA won't make a rat's arse of a difference. I'm not sure about your maths though. At the end of the day 65W is a 5W increase over 60W (8.3%) regardless of current & voltage. That's likely 8% more heat from the globe (though not necessarily if it's more efficient) and 8% more heat and load on the cable from the battery to the globe. I would hope there'd be enough margin in all of those components for it not to matter.

because the 65w is achieved at a higher voltage the current is only marginally increased. P(in watts) = V(in volts) * I (in amps), so current = power/voltage.
This just means the wiring only has to accommodate the 78ma increase in current, however you're right about the heat output being independent