No just 2 on high beam and 2 on low beam.
No, It is not even close.
a truck
yes as long as they are both v6s or v8s
YES they are the same.
YES they are the same.
start by checking your fuses.
Yes it will.
Neither the front or rear bumper of a 1989 Chevrolet truck will fit on a 1989 Dodge truck. The bolt patterns are different and will not line up.
Yes
21
Yes.
A 1989 Chevy truck typically uses two leadlights for high beams. Leadlights, or headlights, are usually configured in pairs on vehicles for high beams and low beams. Therefore, it is unlikely that a 1989 Chevy truck would use four leadlights for high beams. It is important to consult the vehicle's manual or a qualified mechanic for accurate information on the specific headlight configuration for that model.