10Si Alternator wiring

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Tio Pancho
Posts: 81
Joined: Fri Oct 20, 2017 10:23 am
Location: La Verne, CA

10Si Alternator wiring

Post by Tio Pancho »

I purchased a higher output 10Si alternator for the 77 Chief build planning for future add-ons. I am a bit stumped on how to wire it in. I have searched the site and found a few items, but am still left confused. Can anyone dumb it down for me. A diagram or link to an FSJ specific site/thread would be really appreciated.

Thanks in advance.
Frank
1977 Cherokee Chief
360 w/ Turbo 400
Work in Progress :D
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tgreese
Posts: 7118
Joined: Fri Jun 08, 2012 6:31 am
Location: Medford MA USA

Re: 10Si Alternator wiring

Post by tgreese »

Do you know how to search?
https://www.bing.com/search?q=site%3Afs ... alternator
https://www.bing.com/search?q=site%3Aif ... alternator

Change your search terms to follow specific topics.

Sorry, I don't have time to write yet another tutorial on this topic. It's been done to death. Plenty of resources if you search and read.

Do you have the original ammeter in the dash? If so, you will need to bypass the ammeter to run a higher output alternator. You do not want to set the dash on fire. IFSJA has a sticky thread about the ammeter bypass. You have two tasks - bypass the ammeter, and wire up the new alternator.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 Chryco Jeep Cherokee KL Trailhawk, ECO Green
Blockchain the vote.
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tgreese
Posts: 7118
Joined: Fri Jun 08, 2012 6:31 am
Location: Medford MA USA

Re: 10Si Alternator wiring

Post by tgreese »

There's also plenty of info in the TSM, if you read that. The CJs with a six from '76 on, used a voltmeter (no ammeter!) and the 10SI. You could copy how that's wired from the wiring diagram in your TSM. There is also a section on the 10SI in the electrical section, that should help you understand how the circuit works and how to wire it.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 Chryco Jeep Cherokee KL Trailhawk, ECO Green
Blockchain the vote.
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