89 cas wiring in a 2g.

[beating4g63s]

so I'm helping a friend install a 6 bolt motor in his 95 gst, well I'm trying to install his cas, well his cas is completely different then any I've found his cas is off an 89 on so his cas is different then any other ones his plug is actually square its two rows of 2 basically, wish I had a picture to show, but anyways he has a yellow/green, yellow/blac, black wire, and I believe it's red (not sure the last one, anyways does anyone know how to wire this freaking thing I'm not 100% sure but I don't want to try and fire it up with it being wrong,


also we have checked this but it's not help really
RRE Instructions

he has the cas of the 89-90
MD121786
Green Lid, Optical Type, Long Wire Harness
RRE Instructions

he has the one half way down all the way to the left. I'll try and post a picture of the plug and wires later.

also if by the way just wanted to double check something that I've read here, if we repin the ecu wires for the injectors we can run stock firing order for the plugs

 

[steve]

Maybe this will help but I think you would better off trashing the 90 CAS since almost all of them have brittle wires coming out and leaking o-rings. Even if this one is good what will you do when it goes bad and you have to find another good unique antique. The information is relative a 1G ECU so you have to translate to the 2G signals using the RRE information.

The books show two different black wires. One larger than the other.

The 90 harness:

pin 1 (Larger)Black Ground
pin 2 Red +12v Power
pin 3 White TDC (to ECU pin 22)
pin 4 Black Crank Angle (to ECU pin 21)

The 91+ Harness:

pin 1 White TDC (to ECU pin 22)
pin 2 Black Crank Angle (to ECU pin 21)
pin 3 Red +12v Power
pin 4 (Larger)Black Ground

 

[beating4g63s]

well really it's not my car and theres a ton of nonturbo 89-90 model dsms in junkyards around to get a cas, but theres really none thats about I'd say 91 especially none of the 2g turbos to steal the wiring anyways is this how to I guess hardwire the cas to the ecu and skip the plugs.