It's not just the wires, it's the headlight switch and the bulb holder
contacts too.
I STRONGLY suggest you read about this on the Stern Lighting web site at
http://lighting.mbz.org/ . He strongly recommends against the larger bulbs
in the stock 9004 bulb holder. Yes, you would be well advised to run new
wires and relays and find bulb holders with larger contacts (but I don't
think you will find these.).
Good Luck,
Bill
90 Westy Syncro
-----Original Message-----
From: Lis Carter <lcarter@COWICHAN.COM>
To: vanagon@GERRY.VANAGON.COM <vanagon@GERRY.VANAGON.COM>
Date: Monday, March 01, 1999 8:45 PM
Subject: 100W/80W bulbs?

Hello;  I found a source of 100W/80W headlight bulbs at a performance shop
here in BC, will I have to install relays to handle the extra current?  I
decided to try one to see if the wires can handle it. or should I take the
chance?   Larry