The MS2 can be configured for either sequential spark or wasted spark with 4 LS2 yukon coils. Sequential spark requires a cam sensor. My advice is to first configure wasted spark with ls2 coils.
Parts needed
4- ls2 yukon coils (d585)
4- spark plug wires the MSD are easy and plentiful
4 - resistor spark plugs - I use BPR6es NGK's
1 - bracket (make your own or Tom from 02again)
1 - GM wiring harness
1 - connector metri-pack 150 8 pin female
1 - Crank sensor (I like the hamlin 55075 hall sensor)
1 - crank trigger wheel from tom at 02again
Wiring - You can have a couple options, either buy individual coil wires and wire yourself or get the GM harness. If you look on ebay you should be able to find many coils from silverado trucks. I recently purchased a set of coils that included 8 d585, 2 GM brackets and 2 GM wiring harness for $50 shipped. I prefer using the GM wiring harness because it gives you a single point to unplug the coils. This was very handy when my alternator light backfed the Megasquirt ECU and allowed the engine to run with the ignition off. (PS, everyone should put a diode on their alternator pin)
You can find an appropriate coil setup by searched junk yards or ebay for the coils from:
2000-2008 Chev. Silverado, suburban, tahoe, yukon, envoy, savana or Sierra.
Look for the aluminum heat sinc next to the connector. Don't buy any coils that don't have it.
All the connectors are Delphi Metri-pack connectors. You can buy them in components or as pig-tails on ebay, mouser, digikey, etc. You may need to ask specifically for the 8-pin connector to the stock harness.
http://connectors.delphi.com/DCSGDMCS/DCS/Catalog/PartDetail.aspx?vUser=GuestUser&vFlag=P&vList=Y&vExact=0&txtPartNum=12047938
If you put together your own connector you need the following delphi part numbers
Qnty 1 - 12047938 - Delphi Metri-pack 150 8-pin female
Qnty 7 - 12048074 - metri-pack 150 Female terminal - 18/16 gauge (I'd get at least one extra)
Qnty 1 - 12066304 - Metri-pack 150 TPA lock - 8 way
Qnty 7 - 15324973 - Red Metripack 150 connector Seal (14-18 GXL wire)
Connecting up the wiring
The MS2 is capable of 2 or 4 logic signals to drive coils. Unfortunately the MS2 software currently doesn't allow you to wire for 4 and drive a wasted coil over plug configuration. You will need to wire 4 coils into 2 outputs from MS2.
You need to get the signal first out of the MS2 case by using unused pins in your harness. Inside the MS2 on the v3.0 board you use d14 as spark A and d16 as spark B. On v3.57 spark A is right of R26 and spark B is bottom of R27.
http://msextra.com/doc/ms2extra/MS2-Extra_Ignition.htm
Note: if you aren't comfortable with modifying the inside of your ms2, get an MS3 as all these outputs are much easier. Also you can wire for 4 coils and use a wasted spark configuration.
Connections to the coils.
At this point you have 2 outputs from MS2 and 4 coils. Each coil has 4 connections. Power (draws up to 15 amps for 4 coils), engine ground, signal (from MS) and signal ground.
http://msextra.com/doc/ms3/ignition.html#ignout
If you are wiring for wasted spark connect the signal such that: SpkA = cyl1&4, SpkB = cyl3&2
Parts needed
4- ls2 yukon coils (d585)
4- spark plug wires the MSD are easy and plentiful
4 - resistor spark plugs - I use BPR6es NGK's
1 - bracket (make your own or Tom from 02again)
1 - GM wiring harness
1 - connector metri-pack 150 8 pin female
1 - Crank sensor (I like the hamlin 55075 hall sensor)
1 - crank trigger wheel from tom at 02again
Wiring - You can have a couple options, either buy individual coil wires and wire yourself or get the GM harness. If you look on ebay you should be able to find many coils from silverado trucks. I recently purchased a set of coils that included 8 d585, 2 GM brackets and 2 GM wiring harness for $50 shipped. I prefer using the GM wiring harness because it gives you a single point to unplug the coils. This was very handy when my alternator light backfed the Megasquirt ECU and allowed the engine to run with the ignition off. (PS, everyone should put a diode on their alternator pin)
You can find an appropriate coil setup by searched junk yards or ebay for the coils from:
2000-2008 Chev. Silverado, suburban, tahoe, yukon, envoy, savana or Sierra.
Look for the aluminum heat sinc next to the connector. Don't buy any coils that don't have it.
All the connectors are Delphi Metri-pack connectors. You can buy them in components or as pig-tails on ebay, mouser, digikey, etc. You may need to ask specifically for the 8-pin connector to the stock harness.
http://connectors.delphi.com/DCSGDMCS/DCS/Catalog/PartDetail.aspx?vUser=GuestUser&vFlag=P&vList=Y&vExact=0&txtPartNum=12047938
If you put together your own connector you need the following delphi part numbers
Qnty 1 - 12047938 - Delphi Metri-pack 150 8-pin female
Qnty 7 - 12048074 - metri-pack 150 Female terminal - 18/16 gauge (I'd get at least one extra)
Qnty 1 - 12066304 - Metri-pack 150 TPA lock - 8 way
Qnty 7 - 15324973 - Red Metripack 150 connector Seal (14-18 GXL wire)
Connecting up the wiring
The MS2 is capable of 2 or 4 logic signals to drive coils. Unfortunately the MS2 software currently doesn't allow you to wire for 4 and drive a wasted coil over plug configuration. You will need to wire 4 coils into 2 outputs from MS2.
You need to get the signal first out of the MS2 case by using unused pins in your harness. Inside the MS2 on the v3.0 board you use d14 as spark A and d16 as spark B. On v3.57 spark A is right of R26 and spark B is bottom of R27.
http://msextra.com/doc/ms2extra/MS2-Extra_Ignition.htm
Note: if you aren't comfortable with modifying the inside of your ms2, get an MS3 as all these outputs are much easier. Also you can wire for 4 coils and use a wasted spark configuration.
Connections to the coils.
At this point you have 2 outputs from MS2 and 4 coils. Each coil has 4 connections. Power (draws up to 15 amps for 4 coils), engine ground, signal (from MS) and signal ground.
http://msextra.com/doc/ms3/ignition.html#ignout
If you are wiring for wasted spark connect the signal such that: SpkA = cyl1&4, SpkB = cyl3&2
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