Forums
New posts
Search forums
Image search
Shop
Amazon Store
T-Shirts
Stickers
Members
Current visitors
Supporting Member Upgrade
Sponsors
About
Log in
Register
Search
Search titles only
By:
Search titles only
By:
New posts
Search forums
Image search
Search
Search titles only
By:
Search titles only
By:
Menu
Install the app
Install
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Jeep Wrangler YJ
YJ General Discussion
Big7 cable kit install question
Reply to thread
Message
<blockquote data-quote="machoheadgames" data-source="post: 440714" data-attributes="member: 18789"><p>the black box is just a simple little box that holds the ground and the two PCM wires together at the alternator.</p><p></p><p>Your new "alt to block" can replace/bypass the thick cable in the little black box, all the old cable did was run to the block just the same. The two small wires come from the PCM and remain unchanged: that is how the PCM controls the alternator voltage and how the PCM turns the alternator on.</p><p></p><p>fuse to alt will be different than stock. Stock is the black 8Ga cable inside the insulator bracket at the top of the alternator, which turns red in the harness and then splits into 2 smaller 10Ga red cables as it enters the stock PDC (black fuse box) and goes to fuses 2 & 6. The new cable will bypass all of that and go straight from the battery to the fuse you install, and then from there to the isolator boot connection at the top of the alternator (where the old cable went).</p><p></p><p>Removing fuses 2&6 from the PDC makes sure the old wire is dead...if that wire is not dead then you will have a large short when that cable touches metal. Which would inevitably end up popping fuses 2&6 anyways.</p><p></p><p></p><p>Little more info for those interested:</p><p></p><p>This is C120, the little box referenced in the thread on the alternator. It looks like a scary proprietary connector, but for the most part it's just a little housing to make the connections easy and protected. </p><p></p><p>[ATTACH=full]122379[/ATTACH]</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 440714, member: 18789"] the black box is just a simple little box that holds the ground and the two PCM wires together at the alternator. Your new "alt to block" can replace/bypass the thick cable in the little black box, all the old cable did was run to the block just the same. The two small wires come from the PCM and remain unchanged: that is how the PCM controls the alternator voltage and how the PCM turns the alternator on. fuse to alt will be different than stock. Stock is the black 8Ga cable inside the insulator bracket at the top of the alternator, which turns red in the harness and then splits into 2 smaller 10Ga red cables as it enters the stock PDC (black fuse box) and goes to fuses 2 & 6. The new cable will bypass all of that and go straight from the battery to the fuse you install, and then from there to the isolator boot connection at the top of the alternator (where the old cable went). Removing fuses 2&6 from the PDC makes sure the old wire is dead...if that wire is not dead then you will have a large short when that cable touches metal. Which would inevitably end up popping fuses 2&6 anyways. Little more info for those interested: This is C120, the little box referenced in the thread on the alternator. It looks like a scary proprietary connector, but for the most part it's just a little housing to make the connections easy and protected. [ATTACH type="full"]122379[/ATTACH] [/QUOTE]
Verification
Post reply
Forums
Jeep Wrangler YJ
YJ General Discussion
Big7 cable kit install question
Top
Bottom