Electrical question after lots of reading

[tgreese]

The fusible links are in the engine compartment. A '77 only has one, between the battery and the Jeep. Connection to the battery is at the starter solenoid, where the (+) battery cable from the battery connects. They just look like wire. Suggest you don't worry about them unless you lose power to the Jeep.

[Triumph215]

Got it done, all seems to work great. Put some gas in and the gauge moved, temp gauge working too. Now if I could find my electrical surge...

[Curly5759]

Have you tried disconnecting the alternator at the charge wire coming off the back and then running the engine? If the surge is gone, you know it is the alternator/regulator. If not, the problem lies elsewhere. Easy way to narrow the problem down.

[nograin]

If you're going to do ^that ^ make sure the wire's ring terminal does not touch any ground.

Another thing you (Triumph) can do is reconnect the ammeter. (Disconnect the battery when doing this). In addition, have a voltmeter handy. Since this pulsing is happening at idle, a multimeter will work fine. Between the two meters you will have a pretty complete picture of what is happening.