If your wagon-r is under warranty don't go for relays.There can be an issue with warranty.You need to speak with your local MASS and if possible get the 100/90 setup installed from them.
If you want to play it safe you can go for the more light options from Philips and Osram.
I had already explained this in my previous post #80.
Check post #80 again.I have told you that they aren't that great for illumination.Even if you plan on using 100w bulbs in the stock fog lamps you will need relays.
As Varun has mentioned the stock kit comes with the entire wiring harness so it is easier to fit as opposed to after market.If the stock kit comes with a relay you can easily use 100w bulbs with them.Varun should be able to clarify this.
As for color of the bulbs(headlight&Foglights),if you want to use it in the Fog/Rains/Bad weather Yellow color is the best.
If you want to play it safe you can go for the more light options from Philips and Osram.
I had already explained this in my previous post #80.
Check post #80 again.I have told you that they aren't that great for illumination.Even if you plan on using 100w bulbs in the stock fog lamps you will need relays.
As Varun has mentioned the stock kit comes with the entire wiring harness so it is easier to fit as opposed to after market.If the stock kit comes with a relay you can easily use 100w bulbs with them.Varun should be able to clarify this.
As for color of the bulbs(headlight&Foglights),if you want to use it in the Fog/Rains/Bad weather Yellow color is the best.