View Single Post
  #2 (permalink)  
Old 01-04-2014, 07:52 PM
patrickt's Avatar
patrickt patrickt is offline
Half-Ass Member
Visit my Photo Gallery

 
Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,014
Not Ranked     
Default

Quote:
Originally Posted by DanEC View Post
I'm not sure how much current I should consider this parallel circuit to run. A 1/2 watt resister could only carry mili-amps - I haven't figured it out (volt x amps = watts)
If you just turn your key on, but don't start the car, the 12.6v in your system, running through a 20 ohm resistor, will result in just a hair under 8 watts by drawing .6 amps. As soon as the car starts, and the VR starts operating properly, there will no longer be a path to ground and thus no wattage at all.
Reply With Quote