Join Date: Aug 1999
Location: Ontario, Canada
Dave Is the test you describe for an altenator with internal regulator?
The 68 has an extetrnal regulator, if you want to bypass the regulator, disconnect the plug, there are two wires that have to be jumped, (Don't know which ones right now), any ways the Gen light wiring is some what of a strange bird.
When the key is turned on, not running the light comes on, power is fed from the swithch through the light and then to the altenator, the circuit is grounded internal of the altenator, when the engines starts and the altenator starts to produce current, power is then reversed through the circuit. since you have a positive 12 volts on both sides of the light and no ground the light then goes out.
Test your altenator, hook up a volt meter at the battery start the engine the voltage should rise to about 13 -14 volts, if it does not then the altenator or regulator is at fault, Try this test first and if you need more info place another post i can outline the full test procedures as it is quite extensive.