1993 Buick Riviera Owner's Manual - Page 189

I A CAUTION: u could be injured if the vehicles roll. Set the arking brake firmly oneach vehicle. Put an utomatic transaxle in "P" (Park) or a manual axle in "N" (Neutral). P I A CAUTION: An electric fan can start upeven when the engine is not runningand can injure you. Keep hands; clothing and tools away from any underhood electric fan. ~~ 3. Turn o f the ignition on both vehicles. f Turn o f all f lights that aren't needed, and radios. This avoid will sparks and helpsave both batteries. And it could save your radio! Find the positive .(+)and negetive (-), terminals on each battery. 4. Open the hoods and locate the batteries.