ECM Question Series 60

Took my batteries out to clean and check water. Made myself a sketch of the cables and wire hookups. I forgot one wire on the sketch. It is a white wire that changes to 4 white wires up inside the harness. It goes to the ecm . If you were holding ecm in your hands looking at it head on the connector would be in the top right corner. I am pretty sure it goes to negative. I did a bunch of searching on line but didn't find anything to make me 100% sure.
1996 series 60 Detroit Diesel 370/430hp
Truck build date is November of 1995
Pretty sure its a DDEC3
9200 IH

I posted this on the O/O site to. I gotta get it going for the morning.

Thanks Mike

 

Yes it does make sense. Only difference my grounds were white. Got it running.
Thank you very much