Topic: Electrical Question, Main fuse block.

[Shamb]

Just as a reference this is an 85 4runner w/ 22RE.  When you flip over the main fuse block on the passenger side fender, does the main power from the battery go to the RED and WHITE on the 80 amp fuse or just the RED?

The problem i'm having right now is that i've traced an electrical problem back to the 40 amp fuse in the fuse block not getting DC and when I flip it over it's being fed with white wiring so i'm assuming the white wires off the main 80 amp is what feeds that 40 amp because everything off of the RED has DC which is where I can see the main power off the battery going too.

If anyone know's it would definitely be helpful, I plan on tearing it apart anyways to double check everything.

[Shamb [OP]]

  

I think the damn main fuse is blown again, pulling it all apart the white wires are just the opposite side of the fuse itself... it's tough to see if it's blown or not but I believe it is...

I hope I don't have a short or something blowing the main fuse... argh...

Btw I find it odd that only the white wires that go to the 40 amp are off the main fuse but the red that feeds the 30 amp are hooked directly to the hot side of the fuse so basically there's no main fuse inline of that... odd???   what's even weirder is that if that is the case since the 80 amp fuse blew why didn't the 30 amp?? unless it's coming from the power wire hooked directly to the battery itself..... and not back feeding from whatever that 30 amp feeds...

okay i'll stop now.. starting to even confuse myself.. ha..

[yotarunner85]

Both the 30 and the 80 amp fuse are supplied power by the white wire from the battery thru a fusable link. Then the white off of the 80 amp goes to the alternator, and the white with red goes to the ignition switch. Hope this helps.

[Shamb [OP]]

Do you have another fuse in between the power wire from the battery before it goes into the main fuse block?

I don't... it looks like someone spliced the wire directly to the battery for some reason.

I'd like to see pictures of what it's suppose to look like if anyone has them so I can do it correctly.

[yotarunner85]

It's suppose to have a fusable link in between the battery and the fuse box.

[yotarunner85]

I'am not by my truck right now. I can post a picture tomorrow if no one else does.

[Shamb [OP]]

 right on, what size is the fuse so I can pick it up.

 

[yotarunner85]

It's not a fuse, it's a fusible link, which looks like a piece of wire (about 4 to 5 inches) spliced in between the wire going from the battery to the fuse box. A fusible link is designed to melt apart if shorted (like a fuse but better with high current). If that fusible link was cut out and replaced with regular wire then I would highly recommend installing a fusible link back in the circuit. If the fusible link is still there and in good condition, then I would leave it alone. I forgot to take a picture of my and won't be able to until Monday. Can you post a pic of what you got.

[Shamb [OP]]

this is just a splice not a fuse able link. does the fuse able link have some type of voltage/ampere burning point?   like a fuse.

[yotarunner85]

this is just a splice not a fuse able link. does the fuse able link have some type of voltage/ampere burning point?   like a fuse.

That looks a little hokey. Is that green wire home electrical wire? Fusible links have a temperature burning point, not amps like a fuse. They are rated by the gauge of the wire. Needs to be replaced with the same gauge, and I don't know what gauge it's suppose to be. You could just cut one out of a junkyard Toyota truck and splice it in to your wirring. Usually fusible link is sold by the roll, like wire. Junkyard might be cheaper. Use buttconnectors to splice it to the wirring cause the fusible links are heat sensitive. Or you might be able to get the whole assembly from a junkyard truck.

[Shamb [OP]]

Or you might be able to get the whole assembly from a junkyard truck.

I like that idea the best, btw yea it is hookie... you should seem some of the other wiring idea's the PO had.... 

I'm fixing it all as I find it.. along with pulling a million feet of speaker wire out of the cab.

I don't think it's home electrical wire under the hood because it has "oil resistant" on the other jacketing... certainly not the same gauge.. I had originally planned on cutting that wire out and resplicing it w/ same gauge then wrapping it with a shrink boot. I've also gotta resplice the battery terminal's.. they're beat to sh*t.

[yotarunner85]

Here's a picture of the fusible link off of my 85 4Runner 22re. The fusible link is the wire with the cover over it. It has eyelet at both ends, so it will be easy to pull off another truck and bolt it right on to yours.