Electrical upgrades
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Elder User
Joined: Jan 2014
Posts: 898
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From: Chillicothe, IA
Electrical upgrades
Howdy all. I am rebuilding the 400 in my 77 F250 SC and figured I would upgrade the electrical too. What I have so far and what I am thinking of doing. I have a complete engine bay wiring harness from a 98ish ranger or explorer including power distribution block. I also have the headlight upgrade kit from LMC. I was going to redo it it because I don't really like how it is made or looks, but right now I just want things done. So, plan is headlight upgrade, 3g upgrade and relay harness for trailer plug, it works similar to the headlight upgrade using battery voltage and relays for trailer lights.
Any thing else I should do I am not thinking of? I will be keeping the factory fuse block and it's wiring, just lightening its load.
Thanks for the look and help.
Any thing else I should do I am not thinking of? I will be keeping the factory fuse block and it's wiring, just lightening its load.
Thanks for the look and help.
Postmaster
Joined: Nov 2011
Posts: 2,553
Likes: 10
You are adding alternator capacity. That is good. Also headlight relays. Good also. You are integrating later model fuse blocks ect. Can be good. Attention to detail is required.
My main question is how are you distributing the power from the big alternator? It will want 8 gauge wire minimum between alternator and heavy loads and battery. 6 gauge even better. Also short circuit protection on the charge wire... big fuse or heavy fusible link. Is that part of the plan?
My main question is how are you distributing the power from the big alternator? It will want 8 gauge wire minimum between alternator and heavy loads and battery. 6 gauge even better. Also short circuit protection on the charge wire... big fuse or heavy fusible link. Is that part of the plan?
Thread Starter
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Elder User
Joined: Jan 2014
Posts: 898
Likes: 3
From: Chillicothe, IA
You are adding alternator capacity. That is good. Also headlight relays. Good also. You are integrating later model fuse blocks ect. Can be good. Attention to detail is required.
My main question is how are you distributing the power from the big alternator? It will want 8 gauge wire minimum between alternator and heavy loads and battery. 6 gauge even better. Also short circuit protection on the charge wire... big fuse or heavy fusible link. Is that part of the plan?
My main question is how are you distributing the power from the big alternator? It will want 8 gauge wire minimum between alternator and heavy loads and battery. 6 gauge even better. Also short circuit protection on the charge wire... big fuse or heavy fusible link. Is that part of the plan?
Thread Starter
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Elder User
Joined: Jan 2014
Posts: 898
Likes: 3
From: Chillicothe, IA
Replacing fusible links is a great idea. Have to plan on that.
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