Join Date: Mar 2002
Location: Austin, TX, USA
Re: Power drain
Murray, have you tried the old test lamp trick? Disconnect one of the battery cables (ground is a safer choice) and put a test lamp between the battery post and battery cable to complete the circuit. Your electrical drain will cause the lamp to glow. Then you can begin disconnecting parts of your harness, pulling fuses, etc. until the lamp goes out. If you suspect the charging system, try disconnecting the red wire from the alternator or voltage regulator to see if the light will go out.
If you do a search in the electrical forum you'll find several links to schematics. All first gens were essentially the same. Accessories like RS headlamps and AC are in different drawings but I think you'll find those as well. Also, someone posted some color schematics that are quite popular - check the sticky topics at the top of the Electrical forum. The moderator will send you a free password to unlock them.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI