What car, what year, what engine?
On a 1987 305 engine with an HEI distributor, the number 1 spark plug wire is typically placed at the terminal directly opposite the vacuum advance on the distributor cap. This is usually the first terminal clockwise when looking down at the cap from above. Ensure that you follow the firing order of 1-8-4-3-6-5-7-2 when routing the remaining spark plug wires around the cap.
the firing order on a GM HEI is 1-8-4-3-6-5-7-2
The marked # 1 position on the distributor cap faces towards the REAR
No-1 wire goes on the distribitor cap in the 7: o clock position clock wise when standing in front of your vehicle. 18436572
Number 1 on the distributor cap is the top post closet to the firewall. Looking at the distributor cap it would be... top row 1-3 bottom 2-4
where is number one on a vortex 4.3 v-6 distributor cap
The distributor cap should have the number 1 marked on it. The distributor cap is installed with the # 1 position facing the engine , slightly towards the drivers side of the engine
Front righthand side of cap
Should have a small number 1 on the top of the cap.
# 1 on the distributor cap faces to the FRONT / CENTER
# 1 on the distributor cap faces to the FRONT / CENTER
The marked # 1 position on the distributor cap faces to the FRONT