Fuseholder mounting for 3G swap

minne5.0ta

New Member
Apr 21, 2005
6
0
0
Minnesota
I'm in the process of doing the 3g swap and i'm useing a 150amp MEGA fuse and fuse holder. My question is, where is everyone mounting thier fuse holders? I know they say to get as close to the solenoid as possible, but there is so much crap in the way to get a good flat surface to mount the holder. What are the issues with mounting it on the passanger side, closer to the Alt? I also had the idea of NOT mounting it and just supporting with zip ties. Any helpful tip would be great.

Thanks
 
can you see it?

P4230279.jpg

that reminds me, I need to hide that fan relay soon...
 
I ran the 2ga (or 4ga) wire from the 3G around the oil pan (like the starter cable) and into the fuse holder which is screwed into the frame rail. I also passed the smaller "control" wires from the alternator to follow the larger cable...
 
Mine is tucked away neatly on the back side (closer to the shock tower) of the battery. Cant even see it.

Do you have it tucked in behind the battery inside the fender or is it in the engine compartment? I was thinking of hiding it in the fender by the washer fluid bottle, but I'd have to remove the fender to screw it to something. That's why I was thinking of just using zip ties to hold it to something:shrug:

Hiding it is my perfered choice. I looked at mounting it on the frame rail but I was worried about road debris.

Thanks for the idea's, keep them coming.
 
thanks for the warning... I have a 25amp fuse in there.. had it for 2 years (on the cougar before)... No problems as of yet, but I am paranoid about that stuff... hehe new fuse holder coming soon :D But my fan hardly ever runs with my aluminum rad anyway :D
 
Boss 351, is that fuse holder on the control side of the circuit? If so, it should be fine. On the load side, a slow burn fuse or a fusible link is the way to go if you should ever need to redo anything. You do want some sort of circuit protection on the load side, and yours is likely on the wire from the battery to the relay (terminal 30 or 87, depending upon how you wired your relay).

For the OP, there are some smaller fuse holders out there if space is a concern. I'd worry about the cable connections and zip ties only because of vibrations (metal fatigue). If you can get it decently rigid, it might work ok.

Good luck.
 
so 4g wire goes from alternator to solenoid but cut the 4g wire and put a fuse in between correct?

Hopefully it's not that crude, but yes, a fused 4 AWG cable is what most folks use. If going with larger than a 130 amp alt, a larger cable is wise.

I mentioned the crude part because you want nice tight and clean solder joints of the cable to the lugs.

Good luck.
 
Hopefully it's not that crude, but yes, a fused 4 AWG cable is what most folks use. If going with larger than a 130 amp alt, a larger cable is wise.

I mentioned the crude part because you want nice tight and clean solder joints of the cable to the lugs.

Good luck.

+1.

I like to use a small propane torch along with a little flux to clean the terminal before soldering the lug to the wire. I usually hold the lug in a vise or pliers and fill the lug with solder and then push the wire into it while it is still hot.
Works like a champ! :nice:
 
The 4 gauge wire for my 3G runs down the same path as the starter power wire. So I bolted the fuse holder to a piece of phenolic insulator board and bolted that to the ignition coil frame.