These wiring diagrams, from autozone.com show you the fuses, wiring, and wire colors, to do the circuit checks: http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?chapterTitle=Wiring+Diagrams&partName=Chassis+Electrical&pageId=0900c152800781b2&partId=0900c152800780c7 You’ll have to “register” at that site, come back here, and click the link, again. Go down to Fig. 31, 32, 33, and 34.
There are, also, repair articles at that site, such as this ignition coil test: http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?fromSearchPage=true&pageId=0900c15280077d5a&partName=Ignition+Coil&partId=0900c15280077d5a