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68 Rally Pack fusible link alternative
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    Posted: Aug/07/2022 at 5:12pm

 Getting close to firing up my latest 68 project. I am thinking of putting an inline Maxi fuse holder in place of the fusible link. Probably just short term until it is running well and I am comfortable with everything. I am thinking of this just in case there is some unknown electrical issue that would blow the fusible link that it would be cheaper to replace a blown fuse. FYI, the car has all harnesses new from M&H, and new starter, alternator, and voltage regulator.   The big question is what amp rating fuse to use? 30, 40 amp??  Thanks for any insight. Wink
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#1 1968 AMX Rally Green 343 Z code 4spd since 1975 #02642
#2 1968 AMX Rally Green 290 N code 4spd since 2019 #02959
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Points: 11539 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ramblinrev Quote  Post ReplyReply Direct Link To This Post Posted: Aug/07/2022 at 5:57pm
Since all the juice runs through the oil/amp gauge, I'd go for a 40 amp fuse. Good luck!
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Points: 5457 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 6PakBee Quote  Post ReplyReply Direct Link To This Post Posted: Aug/07/2022 at 8:16pm
Have lots of fuses in the glove box along with a flash light.
Roger Gazur
1969 'B' Scheme SC/Rambler
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All project cars.

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Points: 603 		Post Options Post Options   Thanks (0) Thanks(0)   Quote madams Quote  Post ReplyReply Direct Link To This Post Posted: Aug/08/2022 at 3:35pm
This is a decent discussion about fusible links:
68 AMX 390 4SP
67 RS Camaro 327 Auto
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Points: 2011 		Post Options Post Options   Thanks (0) Thanks(0)   Quote BU1 Quote  Post ReplyReply Direct Link To This Post Posted: Aug/08/2022 at 4:34pm
Originally posted by madams madams wrote:

This is a decent discussion about fusible links:


 Thank you. Lots of good reading there. Thumbs Up
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#1 1968 AMX Rally Green 343 Z code 4spd since 1975 #02642
#2 1968 AMX Rally Green 290 N code 4spd since 2019 #02959
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Points: 3806 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve_P Quote  Post ReplyReply Direct Link To This Post Posted: Aug/09/2022 at 9:13pm
A 35A alternator should have a 35A or 40A fuse.  Are the fusible links NLA?
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Points: 2011 		Post Options Post Options   Thanks (0) Thanks(0)   Quote BU1 Quote  Post ReplyReply Direct Link To This Post Posted: Aug/09/2022 at 9:24pm
Originally posted by Steve_P Steve_P wrote:

A 35A alternator should have a 35A or 40A fuse.  Are the fusible links NLA?


 Steve, the fusible links are available at about $20 a pop. This car was bought with no engine and had several melted harness connectors at the alternator. I have all new M&H harnesses, alt, and starter. I just thought for making final connections and initial start up, IF there is some unknown elec issue, it would be cheaper to replace a fuse if need be. Then put the fusible link in after everything settles in.
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#1 1968 AMX Rally Green 343 Z code 4spd since 1975 #02642
#2 1968 AMX Rally Green 290 N code 4spd since 2019 #02959
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Points: 7544 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tomj Quote  Post ReplyReply Direct Link To This Post Posted: Aug/09/2022 at 11:09pm
Fusible links aren't for overload, they're for protection from damage in crashes etc that would start a fire. 

Another reason to use them is that in any electrical system (aerospace, auto, phone, stereo) connectors are by far the most unreliable component. Especially for something as mission critical as ignition I'd stick with crimped fusible link on the harness. 
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