On a 2003 Ford F-150 :
4.2 litre V6 engine
firewall
3 - 6
2 - 5
1 - 4
front of vehicle
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4.6 and 5.4 litre V8 engines
firewall
4 - 8
3 - 7
2 - 6
1 - 5
front of vehicle
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front ( for a Ford V8 engine )
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford F-150 ( V8 )
On a 2003 Ford F-150 ( 4.6 and 5.4 liter V8 engines ) firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
For a Ford STRAIGHT 6 cylinder : 1 - 5 - 3 - 6 - 2 - 4 For a Ford V6 engine : 1 - 4 - 2 - 5 - 3 - 6
1-4-2-5-3-6
In a 2003 Ford F-150 , 4.6 and 5.4 liter V8 engines : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
FIREWALL 4 - 8 3 - 7 2 - 6 1 - 5 FRONT
firewall 3 - 6 2 - 5 1 - 4 front
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front ( Ford V8 engine ) also , for the straight 6 cylinder engine , the # 1 cylinder is at the front
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front