After bringing your engine to top dead center, line the distributor up so the rotor faces the number one cylinder. Rotate the dist. so the closest terminal lines up with the rotor. This will be your number one in your firing order. Mark that terminal #1. Tighten the dist. in place. Put your wire from the cap to #1 cyl. Now follow the firing order for the rest of the wires. The dist. rotates clockwise so put the wire on the next terminal on the left and route it to the next number cyl. in the firing order. Do this till all are connected. Here is a link to help. http://www.classiccarauto.com/impala/how_to/install_distributor.shtml
We need to know what engine it has.
Gonna need to know which engine you have in there.
Number 1 plug position will be listed on the cap. Now if you know the firing order, and you know the direction the distributor is turning, you then will know plug positions as connected to the distributor cap.
They have to be in the firing order.
Is there a picture of distributor cap firing order for 2003 ford f150 4.2 engine
Which engine.
It depends on the firing order of the engine
get a book Run your spark plug wire from the #1 plug to the #1 lug on the distributor cap. Then follow the rest of the firing order going clockwise around the cap.
firing order from spark plug to the distributor cap
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1,3,7,5,8,9,10