I'm not specifically after a value for the motor in the S2000. Just after a rough figure on how much power wiper motors on mid sized cars draw.

 

find out what the rating is on the fuse (like on the fuse if it says 7.5 then it can take a max of 7.5 amps) and multiply it by 12 (for 12 volts). So if the wiper motor fuse is 7.5, times 12 volts is 90 watts. But I'm sure for a wiper motor it probably doesn't use more then 1 or 2 amps. So it would be 12 to 24 watts.

 

cool thanks.

 

The wiper motor is fed from fuse 8 (20 Amp) and they did that for a reason. I've not measured actual draw, but I'd bet on a wet windshield the motor draws 3-5 amps on slow speed, and 5-7 amps on high. On a dry windshield I bet it draws 50% more current, and if the wipers are stuck in snow or ice, I bet it will run up to 12-15 amps.

This is just a guess, but an educated one. You don't fuse a 1 or 2 amp motor with a 20 amp fuse. W/W motors are popular in home-brew animation, and I seem to remember current ratings in the 10-15 amp range when they are used for waving signs and stuff.

 

Thanks for all the replies.

Reason I needed to know was that my crazy friend wanted me to hook up an old wiper motor to a homemade rotisserie(sp.) using mains power through a step down transformer.

The spit is on ball bearings so it turns without much resistance.

We ended up using a 100VA rated 240v-12V lightingtransformer, a big bridge rectifier and used a lighting dimmer to control the speed.

We had a party and it worked well.

 

I figured it was a non-automotive application you had in mind. W/W motors are good for all kinds of stuff, as are door solenoids and power seat motors. I used to make all kinds of Halloween animated stuff using car parts.

 

You'll have to share some of your projects so I don't get bored next rainy day.