Voltage drop when I hit the brakes Options

[PinetreePorsche]

What's wrong here? The voltage on my meter (stock- center console) falls from near 13 to 11-and-a-bit, daytime, and has a corresponding drop from a slightly lower starting (mid-12 area) with the lights on. Turning on the lights, without other loads, barely deflects the needle down, maybe .3 volts--that's for 2 fr. corner, two taillights and two markers. Why would the brake bulbs drain so much more? -is there a short somewhere--and no, I haven't been blowing any fuses. Just wondered--don't want to get stuck in an after-dark traffic jam, sit with the brakes on and drain the battery. -C

[Dr. Roger]

if all of your connectors are clean and wiring is healthy, then i'd load test your battery to verify it's health.

everyone says, "ohhhh, my battery is only X years old..."

whatever. load testers are cheap easy insurance for your battery. and you'll drive with a bit more confidence and probably save one AAA use. =-)

Roger (IMG:style_emoticons/default/beerchug.gif) Good luck.