im confused...which wire still shows 12v? if its the acc circuit, then your memory wire is dead. first thing to do is check your fuse box. most vehicles have on under the dash and one under the hood. check both. some fuses can cause something else not to work. like the cigarette/power outlet fuse can cause your memory wire not to work. if still no luck tap 12v constant from another source. the fuse box isnt a very good source. try the ignition switch harness or directly to the battery