• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Interesting information, if it's true.

JJRJR

Well-Known Member
Joined
Sep 3, 2011
Messages
696
Reaction score
1
So, in my never-ending job of researching problems on my Runner, I came across something called "Typical Accessory Current Draw (AMPS)." If this is accurate, I'm amazed at some of these numbers. It came from www.procarcare.com I don't know how to post a PDF here so I'll list some of the common ones:

Headlights (high beam): 10 - 22 AMPS
Headlights (low beam): 40 AMPS - can that really be true??
Tail lights: 8 AMPS
Turn signals: 10-15 AMPS
Wipers: 6 - 20 AMPS
Radio: 10 AMPS
A/C: 10 AMPS (seems low)

Using the low end of these numbers, my car easily hits in the 90 AMP draw range. I understand it's not a constant draw, but seems maybe the AMP requirements of these Runners may be a little more that we're all thinking.

John
 

Big John

Sit back, relax Don't bitch about the cigar smoke
Joined
Sep 8, 2008
Messages
5,057
Reaction score
79
Let's do some math....

Let's say your headlights are 55 watts (that's what I found for a modern light bulb) and your charging system puts out 14 volts.

Power (watts) = voltage * current (amps)

4 headlights @ 55 watts = 220 watts.

220 watts = 14 volts * 15.7 amps.

So 4 headlights are 15.7 amps

2 headlights are 7.8 amps

1157 tailight bulb is 27 watts for the brake lights and 8 watts for the running lights.

and so forth......
 
Back
Top