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Thread: Fusable Link vs. Fuse Thoughts??

  1. #1
    Join Date
    Mar 2013
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    Portland
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    Default Fusable Link vs. Fuse Thoughts??

    OK. I have an '89 Renix 4.0...
    The stock wiring is from the battery~
    RED (heavy gauge) > Starter Solenoid
    RED (lighter gauge) > Starter Relay
    Black ground to block & to body.

    ** then from Starter Relay (via Fusable Links) to
    GRN FUS LINK > Ignition
    ORG BUS LINK > ECU pin B7
    GRN FUS LINK > Haz/Stop Fuse
    GRN FUS LINK > Dome Fuse
    ....+ others
    ALL OFF THE SAME POWER STUD ON THE STARTER RELAY!

    I picked up a '98 Power Distribution block (under hood wiring harness).
    That system wiring is from the battery~
    RED (heavy gauge) > Starter Solenoid
    RED (lighter gauge) > Pwr Dist. Block
    Black ground...

    ** THEN (vs. starter relay) the lines run from the Pwr Dist. Block to everywhere

    I want to clean up things a bit as well as pulling things like the mechanical fan and replacing with electric...
    And using a fuse line from the Pwr Dist. Block to a relay... ect.

    I was thinking about using separate fused lines for each of the currently FUSE LINK LINES from the starter relay. But wasn't sure if I wanted to pull the fusable link line out ~ or keep it and wire it to a HIGH AMP fuse'd line.

    As far as I've been able to find, the fusable link color coding is:
    Green = 7 - 13 AMPS
    Red = 9 - 17 AMPS
    Orange = ??
    Blue = ??

    Currently, there are 5 green links / 2 orange links / and 1 blue link (on the wiring diagram) from the starter relay to the perspective components. And none note amp ratings...

    Any thoughts would be appreciated.
    Be strong when you are weak.
    Be brave when you are afraid.
    Be humble when you are victorious.
    But be a badass everyday!
    . . . . . . . . . . . . . . .

  2. #2
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: Fusable Link vs. Fuse Thoughts??

    Dave, I took a different route. I hate fusible links and have no love for heavy main fuses. Loose one and they can strand you. So I replaced the fusible links with circuit breakers. Cheap and they will reset themselves and allow you to fix a problem like a wire touching something and get home. Here is my set up straight off the alternator



    Granted, this is not a 4.0, but you get the idea. I have since added another to this bank. Came in handy a while later till I found a short.
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  3. #3
    Join Date
    Mar 2013
    Location
    Portland
    Posts
    1,430

    Default Re: Fusable Link vs. Fuse Thoughts??

    So you went with self resetting circuit breakers like what would be used in a power window?
    Where'd you get them / How much?

    I already have the distribution / fuse block (the under the hood box) from that '98. And it's already wired for 8 relays if I decide to utilize relays...
    And it was free.

    I was primarily only going to use it to get that wire cluster off the starter relay / and as a clean way to add some none-essential accessories.
    Be strong when you are weak.
    Be brave when you are afraid.
    Be humble when you are victorious.
    But be a badass everyday!
    . . . . . . . . . . . . . . .

  4. #4
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: Fusable Link vs. Fuse Thoughts??

    The relays are cheap and available at any auto parts store
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

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