If I put 9005 silverstars in the fogs and do the mod to keep em on with the brights, is that to much for the wires or the head/fog light switch. I live in a highly amish populated community, so its pretty darn dark around here at night. thanx..

 

you will be fine... i have had the same setup for 45,000 miles

 

Fog lamps are run on a separate circuit, via the 15A fuse in position F17 and the fog lamp relay, so the fog lamp bulb size has no load change to the headlamp switch itself.

The load change is only for the fog lamp wiring harness and fog lamp relay.

The mod ( with high beams ) only changes the source for the ground on the fog lamp relay coil ( factory = derived via the high beams / mod = ground at all times ).

Is it too much for the wires ?
Stock Fog Lamp bulb is a 9140 ( 2006 OM source ) which is 40 Watts @ 12 V = 3.3 A each, total load 6.6 A
Sylvania Replacement Guide is a 9145 ( Sylvania web site for 2006 ) which is 45 Watts @ 12 V = 3.75 A each, total load 7.5 A
The 9005 is a 60 Watt bulb @ 12 V = 5 A each, total 10 Amps. If you follow the 80% rule ( size the circuit and fuse to 80 % of the load ) this is well within the limits of what Ford seems to have designed the circuit for. This statement is assuming that Ford designed the wiring correctly, with the size fuse they used. That is the real question, and is up to you if you feel safe enough with the theoretical guidelines Ford should have used.

EDIT :
If you want to make sure you are safe, and get the most voltage to the bulbs, to get the most out of them, an external relay'd harness made from 12 AWG wire is dirt easy to make, if you are interested..

 

I've had the 9005s for over 2 years now, and I do alot of highway/interstate driving with them on. I've never had a problem.

I also modded the bright/dim relay so that they stay on with brights.

Big improvement over stock.

 

I would love to do this...care to share the "how to"?

 

I did it a couple years ago, so I don't remember exactly what I did. However, I learned it on this board, so search it out. There were several threads on it.

Good luck.

 

Here's the link.

https://www.f150online.com/forums/sh...26&postcount=1

Or here's the whole thread.

https://www.f150online.com/forums/sh...26#post1510226

 

I changed to the 9005's and holy crap! major difference, cant wait to do the bright mod today..look out amish buggys....LOL

 

I installed the 9005's yesterday and and I can't believe the difference in the color of the light. I did NOT change the headlights because I wanted to see if there was a difference first.

Now I can't wait to get the H13's too. I really like the white light of the silverstars instead of the yellowish color the factory headlights put out.