Hooking up a Mallory 685 ???
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Joined: Nov 2008
Posts: 24
Hooking up a Mallory 685 ???
I have a 93 z28 with an opti spark and was wondering if there is a diagram for this to one in the kit does not show an opti spark...I want to use it to pull timming out and use it for a n20 set up. The problem Im having is when its on n20 it pulls great till mid 2nd gear then it starts to surge..It may be fuel preasure also but I think its timming cuz the chip in it the timming is advanced.
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Joined: Sep 2006
Posts: 656
From: rhinebeck, ny
you can use the msd harness for a dual connector coil. do you have a relay wired in or is the solenoid wired straight to the box? if its wired to the box without a relay you could be overloading it making it turn on and off. or if you have a relay it may be taking a poop. or your power source has a bad connection. or a million other things. pill it for a 75 shot and run it without being hooked to the box.. then you will know if its the box or not..
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Joined: Aug 2007
Posts: 746
From: Bennett N.C.
https://www.camaroz28.com/forums/sho...d.php?t=513004
Wiring the kit is painfully simple. I would strongly suggest buying the MSD harness for 30 bucks and avoid cutting and splicing into the factory harness. You basically are going to hook up a total of 6 wires to get the box to function, one is for power, one is for ground, and the other 4 will be crimped to the MSD harness which will in turn plug into your ignition coil. Here is the correct color coordination for the MSD harness to the Mallory box:
Red to Red
Black to Black
White to Green
Orange to Yellow
Just follow the instructions that come with the box, it isn't too hard to follow. After that, follow the link provided above to get your window switch and timing retard functions hooked up.
Red to Red
Black to Black
White to Green
Orange to Yellow
Just follow the instructions that come with the box, it isn't too hard to follow. After that, follow the link provided above to get your window switch and timing retard functions hooked up.
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