I went out to run an errand this morning and the truck wouldn't start. Acted like a bad battery so I checked the voltage with the terminals hooked up. Sure enough it was down around 9. So I disconnected the terminals and checked and was getting 13. So I have a drain somewhere. CHecked the alternator and that didn't affect the voltage. When I turn the key to the on position everything seems fine, but as soon as it goes to run the gauges go back and forth, the relays start clicking like crazy and it won't turn over. Anyone have any ideas where to start. Its not a bad starter but I'm wondering if it could be either the ignition key switch or something like that. any help is greatly appreciated.