Here's a simple multi (although a long walk) that will lead you to a shocking location where you'll find the necessary information to complete this multi. As you approach the coordinates you might feel like you've entered an area that's off-limits. But no, you're fine as long as you don't touch. There is no cache here, but you are standing in front of one of the many large water pumps used to transfer pond water.
Your question: How many volts does it take to operate the motor for this pump? And remember, please don't touch anything.
This shocking cache is at: N37 25.913 W122 01.ABC ABC = 790 - Voltage
(1) Fgnegvat ybpngvba = Benatr Fgvpxre (2) Pnpur = nobhg 6 srrg uvtu. (3) Juvpu genvy? Urnq gb gur Abegureazbfg genvy naq vs lbh cnff gur "Vaivfvoyr Qnatref! Arpebgvmvat Snfpvvgvf" fgnegvat pbbeqvangrf, lbh'er ba gur evtug genvy. Ng gur G va gur ebnq lbh'yy urnq jrfg (yrsg) naq znxr gur teno qbja gur ebnq dhvgr n jnlf. Guvf vf nobhg n 4 zvyr ebhaq gevc.