C 20 3/4 Ton Pickup 2WD V8-379 6.2L DSL VIN C FI (1983)
![background image](/chevrolet/c_20_3/4_ton_pickup_2wd/v8-379_6.2l_dsl_vin_c_fi/Page-531003.png)
The only time battery voltage should be present in the brown wire is when the engine is running. With the key on, and the engine
not running, a low voltage (approximately 3 volts) will be present in the brown wire. This is normal.