T/Case Np249, Np246, Np261 & Np263Hd Rear Case Half Magnesium USA Standard Gear Drivetrain & Differentials - Differential Electronics - Differential Lock Actuator Once 12 volts and ground

Once 12 volts and ground are applied to the only two wires of the unit

1975-1978 GMC K15 96

but upon acceleration

Welding and cutting required to install this kit

GMC K15/K1500 1/2 Ton (4WD) (1973 - 1977)

T/Case Np249, Np246, Np261 & Np263Hd Rear Case Half Magnesium USA Standard Gear Drivetrain & Differentials - Differential Electronics - Differential Lock Actuator Once 12 volts and groundNP249, NP246, NP261 & NP263HD t case Rear Case Half . NP249, NP246, NP261 & NP263HD Transfer Case Rear Case Magnesium Features and Benefits: NP249, NP246, NP261 & NP263HD Transfer Case Rear Case Magnesium Details: AAP UDA 4: 150 Application Summary: 2006 Cadillac Escalade Esv (Rear) 2002 2006 Cadillac Escalade Ext (Rear) 1999 2006 Cadillac Escalade (Rear) 2007 Chevrolet Avalanche (Rear) 2002 2006 Chevrolet Avalanche 1500 (Rear) 2002 2006 Chevrolet