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Old 01-06-2021, 10:49 AM
tgreese's Avatar
tgreese tgreese is offline
Join Date: May 29, 2003
Location: Medford MA USA
Posts: 11,369
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.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination ATs, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
ECO Green: '15 FCA Jeep Cherokee KL Trailhawk
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Old 01-21-2021, 05:45 PM
Triumph215 Triumph215 is offline
230 Tornado
Join Date: Dec 19, 2020
Location: Monterey, Ca
Posts: 24
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...
1977 Wagoneer
1964 Triumph TR4
2009 BMW R1200 GS
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Old 01-21-2021, 07:00 PM
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Curly5759 Curly5759 is offline
232 I6
Join Date: Mar 08, 2015
Location: Verde Valley, Arizona
Posts: 199
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.
77 Cherokee S 360/TH400/QT
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Old 01-30-2021, 08:32 AM
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nograin nograin is offline
304 AMC
Join Date: Dec 19, 2000
Location: Philadelphia, Pa., USA
Posts: 2,090
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.
'85 Grand Wagoneer
360 727auto, NP229
body by beer (PO)
carries wood inside
no "wood" outside
My other car is a fish
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