MSD DIS-4 Plus HO wiring diagram? - 3000GT/Stealth International Message Center
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Old 08-13-2005, 10:32 PM   #1 (permalink)
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Default MSD DIS-4 Plus HO wiring diagram?

Anyone got one of these? The wiring on them is a bit different than the older DIS-4 HO with the dipswitches (this one has rotary knobs for the settings), and like a dumbass I managed to misplace the instructions after I installed it in the car. MSD still has the old instructions only on their website.

I need to know which wire on it is the Tach wire. On the old one it looks like the tach wire plugs into a little connector on the DIS-4, but on this one there is an additional wire coming out of the unit, and it also has that black slip-in connector on it. Is the slip-in connector the tach lead, or the additional wire (pink?).

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Old 08-14-2005, 05:53 PM   #2 (permalink)
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Default Re: MSD DIS-4 Plus HO wiring diagram?

Since nobody replied, I'll answer my own question and provide some additional info...

Tach output from the MSD DIS-4 Plus is the same as on the non-plus version. There's a spade connector that you need to plug a connector into. My MSD box didn't come with one, but a standard crimp-on one that I had laying around worked fine once I trimmed the insulating boot off it.

It'll also work totally fine if you connect the tach output straight to the tach in the car, without the expensive and bulky MSD "tach adapters". Just cut the white wire on the flat connector at the stock ignition power transistor (below the stock coils) and connect the tach output to the harness-side of the wire (not the PTU side). Awww yeah, tach working again.
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Old 08-15-2005, 08:39 AM   #3 (permalink)
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Default Re: MSD DIS-4 Plus HO wiring diagram?

Damn tach adpaters. Seems most can get away without them and some can't. Of course I'm in the "can't" category...as always.

What are the advantages of the "plus" model?

Jeremy
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Old 08-15-2005, 09:37 AM   #4 (permalink)
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Default Re: MSD DIS-4 Plus HO wiring diagram?

Quote:
Originally Posted by HilbillyHomeboy
What are the advantages of the "plus" model?
It has rotary dials for adjustment instead of the dipswitches. It has an additional "nitrous retard" so when you are spraying it can pull out timing at the top-end (programmable retard amount). Has an "ignition kill" wire that when activated will disable spark for anti-theft purposes.

I'm sure the 2-step and revlimits are more granular since the rotary dials let you dial your limits by increments of 100 rpm. I think the old one with the dipswitches was more coarse than that.
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Old 08-15-2005, 09:42 AM   #5 (permalink)
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Default Re: MSD DIS-4 Plus HO wiring diagram?

Ok, thanks. I use the AEM ems to control all of those functions so it would be no upgrade for me. (already have DIS-4 HO only to drive MSD coils)

I have a master cut off to disabale, well everything.

Jeremy
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Old 08-15-2005, 10:40 AM   #6 (permalink)
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Default Re: MSD DIS-4 Plus HO wiring diagram?

I noticed in the Summit catalog they now list:

MSD-8883
Wiring Harness, Connects DIS2/4 to Dodge/Mitsubishi
(new) $25.88

Would this work for your DIS? I also wonder if this is dsm and not compatible with the 3/s??
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Old 10-01-2005, 07:51 PM   #7 (permalink)
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Default Re: MSD DIS-4 Plus HO wiring diagram?

Part number 8883 does not work i tried it already
what you need is bothe ends of the front o2 sensor off a 95-99 eclipse turbo i made my harness plug and play

wasn't as hard as i thought it would i was just thinking to hard
its that simple

if you need help just ask

Kx
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Old 10-03-2005, 09:50 AM   #8 (permalink)
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Default Re: MSD DIS-4 Plus HO wiring diagram?

Don't those O2 sensor connectors have two larger-gauge wires and two smaller-gauge wires in them though? The ones I looked at did. If that's the case, that isn't what you want to use.
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Old 10-03-2005, 10:03 AM   #9 (permalink)
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Default Re: MSD DIS-4 Plus HO wiring diagram?

yeah, that new Plug and play harness is for 2 coils, versus our 3. Dont' work. Called MSD and there is nothing for us. But wiring in the MSD DIS-4 is cake anyway. No reason to need the quick harness.
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Old 10-21-2012, 03:01 PM   #10 (permalink)
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Default Re: MSD DIS-4 Plus HO wiring diagram?

Thread from the Dead!

THANKS to Matt Jannusch for this, I am unfu%^ing the rats nest of wiring on my 94 VR4 (FINALLY running again but some issues LOL surprise), and was looking at all this, found this message and how to get rid of the two HEAVY (~2.6 lbs total) STUPID MSD TACH ADAPTERS that Matt laid out so nicely.
It WORKS!!! WOW THIS IS SO GREAT I'VE HATED THOSE THINGS FOR A DECADE+!!!

Quoting Matt:

"Tach output from the MSD DIS-4 Plus is the same as on the non-plus version. There's a spade connector that you need to plug a connector into. My MSD box didn't come with one, but a standard crimp-on one that I had laying around worked fine once I trimmed the insulating boot off it.
It'll also work totally fine if you connect the tach output straight to the tach in the car, without the expensive and bulky MSD "tach adapters". Just cut the white wire on the flat connector at the stock ignition power transistor (below the stock coils) and connect the tach output to the harness-side of the wire (not the PTU side). Awww yeah, tach working again."
---------------------------
THANKS MATT!!!!!!!!!!!!!!!!!!!!!!!!!! AND 3SI for KEEPING ALL THIS INFO!!!!!!!!!!!
Jack T.
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