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1972 F250 4x4, 78 d60/d60, 3.55, np205, 200hp 4bt nv4500
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Discussion Starter · #1 ·
Sorry for a common knowledge question.
Moving battery and solenoid over to DR side, will make up a 7' 4ga charging cable from dodge alternator. Parts stores carry 14 ga fusible links which seem chinsy attached to a 4ga cable. If a 'maxi fuse' is used, should I use a 120Amp fuse to match the alternator output?
Thank you..
Sam
 

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A fusible link and a fuse are two different items. The fusible link is supposed to be 4 numbers smaller than the wire it protects. You buy them based on amp rating. What is your alternator output? Fusible links are color coded. Blue = 100 AMP, Grey = 120 AMP, and Maroon = 140 AMP. A 4 ga wire would be protected by an 8 ga fusible link which is the largest size available. That link cannot be longer than 9 inches. Shorter is better.
 

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Premium Member
1972 F250 4x4, 78 d60/d60, 3.55, np205, 200hp 4bt nv4500
Joined
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182 Posts
Discussion Starter · #3 ·
Alright, appreciate it. Plan is to run a 4awg alt to battery cable with an 8 ga 6” long fusible link wire at the battery end of the cable.


A fusible link and a fuse are two different items. The fusible link is supposed to be 4 numbers smaller than the wire it protects. You buy them based on amp rating. What is your alternator output? Fusible links are color coded. Blue = 100 AMP, Grey = 120 AMP, and Maroon = 140 AMP. A 4 ga wire would be protected by an 8 ga fusible link which is the largest size available. That link cannot be longer than 9 inches. Shorter is better.
 
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