Different knock sensor wiring

**Dewman** · 02-08-2009, 07:50 PM

I am in the process of slowly changing my ls1 intake for a fast 92/92 after removing the intake i find my wiring for my knock sensors are different then anything i have seen.

is that normal?

Another quick question in that on the back of the stock intake there is 2 lines, one to the brake booster and the other small line that runs to a sensor. My fast 92 does not have the nipple in the back for the 2nd small line. Where does it go?

**DaddySS** · 02-09-2009, 12:46 AM

It's not obvious to me what you think is odd about the wiring?

The small line I believe goes to the heater controls if I remember correctly.

**mark21742** · 02-09-2009, 01:54 AM

yup the small one goes to the heater controls, you can add a vaccum (T) in the large booster line to run the heater controls.
knock sensor wiring is normal

**Dewman** · 03-02-2009, 10:30 PM

One more quick clarification
For the lines on the left i have the top one leading to the back of the intake manifold and the bottom i have capped off. Then i need to cap off the 1 end of the T at the back of the manifold?

**mark21742** · 03-03-2009, 03:26 AM

the short one on the back pointing to the passenger side hooks to a hose coming out of the fire wall that works the heater controls.
plug the other one.