Bypass Alt 140a; No Anything

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Joined
Jun 2, 2024
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Location
New Orleans
Looking to see if I can get some help. I know it's my fault, but need some guidance lol

98 LC100

I upgraded my stock alternator and ground wires. With the new alt to battery cable it goes to a 150 amp fuseable link and then ties into the battery terminal.

I cut the old alt wire off at the terminal (at the alt) and then disabled the OEM 140amp fuseable link that's attached to the battery terminal. Hooked everything back up, truck turned over but I have zero anything. Zero lights, dash, AC, etc.

I redid the ground and that doesn't appear to be it.

Looking at the diagram for the fuseable link, I believe it to be one of 2, or maybe both, things:

1) there is a jumper from the 140 amp fuseable link to the alt-s fuse.

2) there is a jumper from the 140 amp fuseable link to the 100amp fuseable link.

I think the 7.5 alt-s (which is good) is for the voltage regulator and starter. I think the 100amp is for everything that's not coming on.

Can anyone confirm or have any ideas (all worked fine before this). Thanks!

Screenshot_20240908_205208_Chrome.jpg
 
I think you need the 7.5 amp fuse connected to the alternator as this is the sense wire and how the computor controls the output of the alternator.
 

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