Indmar GM V-8 Inboards (including LT-1) manual. Includes Color Wiring Diagrams. Clymer Marine and PWC manuals are the #1 source for DIY maintenance, troubleshooting and repair. With step-by-step procedures combined with detailed photography and extensive use of exploded parts views, Clymer manuals are a must-have tool for the do-it-yourselfer.