Topic: Will this headlight work?

[OApb]

Hey guys, well today I was working on the bike trying to get the front brake light switch to light the taillight. I wiggled the wires around and found that they were stretched too tight and was pulling the switch out and not letting it work. Well I proceeded to take the headlight out and somehow managed to drop it and needless to say I can no longer use it. I found this replacement on ebay and was wondering if it would work. The auction says it will but Id like some of the experts opinions. Another plus of this light is I was looking to upgrade to the halogen replacement light anyways. Thanks

http://cgi.ebay.com/ebaymotors/Honda-CB750-Cafe-Racer-Chopper-Headlight-Upgrade-Kit_W0QQitemZ380148232375QQcmdZViewItemQQptZMotorcycles_Parts_Accessories?hash=item588299b0b7&_trksid=p4506.c0.m245

[Zaipai]

First, I am no expert on anything.. However, it is a 7" round light so it should work. It will be a bit brighter, but not a lot. If you really want to brighten your head light, try a HID kit, you would have to google it because I don't know who sells them but boy are they bright.. Any way.. yes as far as I can tell it should work fine. You may want to wait for more replies tho.

[TwoTired]

You need to know the watts it consumes, and we need to know what bike it is going into.

[OApb]

sorry, says hella h4 bulb so im guessing its an h4 55w bulb. and the bike is a 78 750f

[MoTo-BunnY]

sorry, says hella h4 bulb so im guessing its an h4 55w bulb. and the bike is a 78 750f

Seems odd that the listing doesn't specify the wattage.  . . you say you are guessing it's a 55w but the ad doesn't say and H4 go up to 100+watts, in my understanding. If it was any in the latter range, that would be taxing your electrical system quite a bit?

You could of course, just replace the bulb with a lower wattage if you needed to but then again why not just purchase one from a listing that actually specifies the wattage, in the first place?  

Also, you could inquire from the seller the wattage. . . .



I plan on doing a similar upgrade in the future, but I need to get my charging system 100% first - not too much leeway in my CB500's system for high wattage goodies.  

[OApb]

seller says bulb is an h4 60/55 bulb. should be alright with my charging system right?

[TwoTired]

seller says bulb is an h4 60/55 bulb. should be alright with my charging system right?

Mostly, depends on your riding style.  The battery depletes at idle speeds, so it will drain faster and recharge will be slower when you rev the motor.  No problem at cruise speeds.  But, you spend lots of time idling a stop lights....

So, she'll work if you treat her right, the charging system is up to snuff and you wiring is in good shape.

One thing you should do is measure the voltage getting to your present headlamp under operation, and then immediately compare it to what the battery terminals read.
The stock headlight will be dim with only 10V getting to it.  And while a higher wattage bulb will appear brighter, neither old or new bulb will be as bright as it should be with low voltage getting to it.  These old bike have been known to lose quite a bit of voltage through the system due to resistive connectors and switch contacts in the path between battery and headlamp.
You might be quite surprised how bright the stock headlight is with full battery voltage getting to it.

Cheers,