Troubleshooting and Tips Electrical, Gauges and Sensors

Do I really need the O2 sensor? (14)

Checking Your AFM and TPS ( 2 3 ) (42)

KILL SWITCH, AGAIN ( 2 3 4 5 6 7 ) (135)

Battery Tie-Down Pics? ( 2 ) (31)

No start, no spark. Totally stumped. (20)

Connector pigtails (3)

Brake lights affecting gas gauge? (3)

Ignition Cylinder + Steering Locked (10)

Shifting alternator with shorter fan belt (2)

Stripping Cental Locking and Electric Windows (14)

Best/common oil sensor locations for gauges? (11)

Fusebox relocation (3)

Harness, i cut to much. (4)

My embarrassing trip to Lime Rock - Elec issue (5)

Gauges For the E30 (3)

Is there a ecu with a speed limiter? (5)

87 325e stroker (w/ i top, etc), no spark (4)

Using AC fan wiring for main cooling fan (6)

hi guys im new and have immobilizer ?s (5)

325e cluster work with 2.5L swap (6)

AFR gauge (1)

Alternator problem (3)

Need windshield wiper help asap please (17)

Help - Wiring Question (4)

Wiring Harness (4)

HP gain from turning the cooling fan off (7)

Help Requested - non functioning wipers (6)

Name this plug (1)

E30 Help! TPS? AFM? ECU? I don't even know! (4)

No start signal to Motronic (5)