What time do the cable cars in San Francisco start runing?

We’re planing to go to San Francisco and want to avoid all the traffic and confusion of one-way streets, so we’re going on foot and by trolley car. What time do the first cars start running (in hopes of avoiding a line)? What time do they stop?

cable car

Image taken on 2007-12-01 14:38:51 by NapaneeGal.

Can I disconnect jump start cable when the cars are running?

Hi all!
I think my car has a bad battery. I was successful in jump starting my car with another car. I could get it started and running for a few minutes with jump start cables. I then turned both cars off, disconnected the jump start cable. My car couldn’t start then without the cable.
Can I [...]

San Francisco – Cable Car HDR

Image taken on 2008-12-11 21:06:40 by Maschinenraum.