behind left headlight in engine compartment
12 v
1971s had 12-volt systems.
If the wiring checks okay you may have a faulty generator or voltage regulator.
Yes, AC voltage.The regulator makes it DC.
The 7805 is a three terminal +5 volt regulator.
Possibly the voltage regulator has a poor ground or poor +12v?
The 7905 is a three terminal -5 volt regulator.
The original 1966 stock electrical system was 6 volt negative ground. In 1967 they went to 12 volt negative ground.
Check your alternator its probably weak or going bad I would also check the voltage regulator. This has happened to my 1981 F100.
Hook a 12 volt light to a 24 volt system and the light will burn out in seconds. You need a step-down voltage converter to do this.
the ford is a 12 volt system it has 2 batteries to help in starting . but it is a 12 volt system
IC voltage regulator performs better than any analog voltage regulator. Some IC regulators IC no. are given below- Positive IC voltage regulator- 78xx Negative IC voltage regulator-79xx where xx varies according to the use of ICs raring. as 7805 gives the positive 5 Volt & 7905 gives the negative 5 volt.