Electrical A/C -Radio trickery

I have a 1996 Toyota T100 SR5(4x4 with 3.4lv6) It has over 207k miles and recently developed some electrical bugs. Currently my air-conditioning and cd player will cut out during driving. It is encountered mostly with changes in terrain, via speed humps, rumble strips, etc. I think it may be a loose cable but I am not sure where to begin. Also, I hear a distinct clicking noise coming from underneath the steering column and then it all cuts back on. They both can occur independently of each other and can come back on at any time. I am wondering if this is a simple fix or the beginnings of some serious electrical problems? Any ideas?