1995 z32 TT
1992 z32 TT
Accent Stripe
AIV Delete
Badgeless Rear Panel
Battery Optima Red Top
Big Brakes
Boost Gauge
Boost Sensor Hose
Boost Jets
Brake Idiot Light
Brake Master Cylinder
Butterfly Throttle Body
Carbon Canister Delete
Carpet Hole Repair
Center Console Removal
Classified ad
Clutch MC and Bleed
Cone Air Filter Placement
Connectors Under Hood
Delete & Bypass
Dyno Runs
Earthing Kit
Engine Pull
EGR Delete
Front Fascia
Fuel Line Clamps
Funky Fuses
Gear Shift Knob
Hatch Lock Stuck
Hella Horns
Hood Squeak
Idle Air Adjustment
Injector Dremel
Injector Testing
Interior Hatch Trim Repair
Jacking Car
Manual Boost Controller
Molding Replacement
Nose Panel
Parking Brake
Plenum Pull
PRVR Removal and Bypass
Pressure Wash
Radiator Hard Pipe Leak
Radiator Howe
Rear Interior Trim
Robo's Rules of Z-Dom
Seat Removal
Shock Install
Spare Tire
Speedometer 180 mph
Stereo Installation
Taillights JDM
Temperature Gauge
Throttle Sticking
Vacuum Lines
When TT.net Goes Down
1987 z31 T
2004 Tacoma
2011 Tacoma
1974 Mercedes 450 SL
12 Hours of Sebring
24 Hours of Le Mans
AACA 2004 Hershey
Garage Remodel
Misc Album Pics
Misc Linked Pics
Numidia Raceway
Watkins Glen
Interesting Links
For Sale
Contact & Feedback


This is along the middle of the firewall.  The colored dots are on the following connectors: yellow = detonation sensor; blue = driver side VTC (variable timing cam) solenoid; red = driver side oxygen sensor. 

The shiny red cable running between the VTC and oxygen sensor connectors is not stock.  That is one of the 4-gauge cables from my earthing kit.

What is the point?  The above connectors with the BLUE and YELLOW dots will fit each other, and are sometimes switched in error by mechanics who do not know these cars well.  This will not damage the car but the car will not run right.  The ECU will throw a code 34 for the detonation sensor and the extra horsepower from the VTC will be lost.  

On the engine harness side of the connectors, the wires leading to the detonation sensor are grey and white.  The wires leading to the VTC has green/black and red/black.  

The yellow arrow points to the passenger side oxygen sensor connector.  An enlarged picture  can be seen here

The yellow circle is the connector to the passenger side VTC solenoid.  The blue square is on the black plastic harness cover.   

I easily removed the black plastic harness cover and replaced it with split red loom.  I liked the simpler look and the black plastic was cracked and brittle. 

Notice the telltale white sheathed wire that leads to the VTC connector on both the passenger and driver side.  This white sheath differentiates the driver side VTC connector from the detonation sensor connector.