No Y-adapter. Here is a choice for a LVC to demonstrate how they are hooked up:
http://www2.towerhobbies.com/cgi-bin...ir&FVPROFIL=++
The red wire connects to the positive battery wire that goes to the speed control. The speed control's receiver wire plugs into those three pins that are sticking out to the right. The other receiver wire plugs into the channel two on the receiver.
SH Z-Car, Custom Crawler, 8s Savage,
12s XTM XLB 1/7 buggy,
4wd 4-link rear/IFS Pro4 truck,
Custom Hyper 10 Short Course,
Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz