1994 GMC Suburban Owner's Manual - Page 209

5. Check that the jumper cables don't have loose or missing insulation. If they do, you could get a shock. The vehicles could be damaged, too. Before you connect the cables,here are some basic things you should know. Positive (+) will go to positive (+) and negative (-) will go to negative (-) or a metal engine part. Don't connect (+) to (-) or you'll get a short that would damage the battery and maybe other parts, too. I A CAUTION: Fans or oeher moving engine parts can injure badly. Keep you your hands away from moving parts once the engines are running. 5-5