Honda Spree and Elite 50 Forums

Can i install aux driving light to my 1986 honda spree or any other thing thats electrical????

if you get the 35watt ones.a 50 watt might work but you stator might struggle a bit.look at the repair manuel section and look up the year of your bike and see what the output of your stator is.

Well lets see, the alternator puts out 87 watts. The head light is 25 watts, the taillight is 5 watts, the brake light is 5 watts, the turn signals are 5 watts and the insturment lights are 8.4 total, so just the lights are a total of 58.4 watts. Then you need to charge the battery, so lets say, on the low side 10 watts, that leaves 18.6 watts to run extra lights. It don't sound like even a single 35 watt light is a good idea much less 2. These things aren't meant to be a touring bike. Oh yeah and that 87 watts is at 5,000 rpm, below that it is even less output.

Bear45-70 wrote:Well lets see, the alternator puts out 87 watts. The head light is 25 watts, the taillight is 5 watts, the brake light is 5 watts, the turn signals are 5 watts and the insturment lights are 8.4 total, so just the lights are a total of 58.4 watts. Then you need to charge the battery, so lets say, on the low side 10 watts, that leaves 18.6 watts to run extra lights. It don't sound like even a single 35 watt light is a good idea much less 2. These things aren't meant to be a touring bike. Oh yeah and that 87 watts is at 5,000 rpm, below that it is even less output.

If you have all those things on at one time,you have a problem with your bike.

bakaracer wrote:

Bear45-70 wrote:Well lets see, the alternator puts out 87 watts. The head light is 25 watts, the taillight is 5 watts, the brake light is 5 watts, the turn signals are 5 watts and the insturment lights are 8.4 total, so just the lights are a total of 58.4 watts. Then you need to charge the battery, so lets say, on the low side 10 watts, that leaves 18.6 watts to run extra lights. It don't sound like even a single 35 watt light is a good idea much less 2. These things aren't meant to be a touring bike. Oh yeah and that 87 watts is at 5,000 rpm, below that it is even less output.

If you have all those things on at one time,you have a problem with your bike.

How do you figure that? The head light is always on, as is the taillight and the dash lights. The brake light comes on every time you slow down to stop or turn and then the turn signal should be on. And when does the battery stop taking a charge, since every time you turn any light on it has to cover up the current draw until the voltage regulator adjusts to it? Doesn't sound like anything is wrong anywhere, except perhaps in your thinking process. These thing were not built with any excess power from the alternator. Not like my Crown Victoria P.I. with it's 100 amp alternator to run all the crap the Po-Po put on them.

if all those things are on that you listed constantly then you have a problem.Its what you wrote.your total wattage that you listed means that the are allways on.is that what you ment?

if you take away the brake light and turn signal which ar NOT always on and if he runs a driving light which is a single filiment,he can use the high beam as a off switch so during the day its not on and can still run the 35watt light.

bakaracer wrote:if you take away the brake light and turn signal which ar NOT always on and if he runs a driving light which is a single filiment,he can use the high beam as a off switch so during the day its not on and can still run the 35watt light.

<Edited> These systems aren't meant to be run at max output all the time either, which is what you are suggesting.

Bear45-70 wrote:Well lets see, the alternator puts out 87 watts. The head light is 25 watts, the taillight is 5 watts, the brake light is 5 watts, the turn signals are 5 watts and the insturment lights are 8.4 total, so just the lights are a total of 58.4 watts. Then you need to charge the battery, so lets say, on the low side 10 watts, that leaves 18.6 watts to run extra lights. It don't sound like even a single 35 watt light is a good idea much less 2. These things aren't meant to be a touring bike. Oh yeah and that 87 watts is at 5,000 rpm, below that it is even less output.

didn't you add all the light wattages together here? they way you made it sound is that all those lights is on all the time when you said the total is 58.4 watts.again the breaklight and turnsignal is not constant on so the battery still will get its charge.I 'm not saying he has to do it,its up to him.I myself have a 55watt driving light on my bike with a early model dio engine so 95watt stator and have no issues and its been on there for over a year with the same battery.