So I bought my GTA as a roller, I'm cleaning up the engine bay and getting ready to put the harness on a diet. I'm installing a gen 1 carb engine, Can anyone tell me what these two boxes next to the brake booster are for ?

I've gandered at wire diagrams until my head hurts !


Thanks

 

Correction.....
headlight control and electronic spark control.
http://www.ebay.com/itm/98-02-Pontiac-Firebird-Trans-Am-WS6-Headlight-Control-Module-/191268337803?pt=Motors_Car_Truck_Parts_Accessories&hash=item2c887b388b&vxp=mtr

 

http://www.ebay.com/itm/Ignition-Knock-Detonation-Sensor-Knock-Sensor-Module-ACDELCO-PRO-216-45-/291001397503?pt=Motors_Car_Truck_Parts_Accessories&hash=item43c108f0ff&vxp=mtr

 

Thanks Joe,

Knock sensor bites the dust !