94 camaro temp and fuel gauge quit working

my temp and fuel gauge quit at the same time. all other gauges are ok. cant find any blown fuses. i have looked at wiring diagrams in chiltons and at autozone repair guides and other than showing temp sensor wiring from one connector to another i cant find anything that shows where they get power or what wires they work off of. if you can help or point me in a direction to look i would be grateful. thank you carlton