grannyknot et al:
FYI, here is a copy/paste extracted from a Stern response (October, 2012):
" 1) Recommended wiring harness and relays - with instructions
Can use a relay kit RIK-2, $49. The RIK is not a harness, but a _parts kit_ containing all relays, brackets, terminal blocks, terminals, plugs, sockets, fuses and fuseholders. You supply your own wire (or your mechanic does) and use the parts from the kit to build up your own wiring harness to take the workload off the switches and bring full power to the lamps. Specific instructions are provided, and the concept is explained at http://www.danielsternlighting.com/tech/relays/relays.html . Parts are specially made premium-grade items (e.g. ceramic headlamp sockets) that accept large-gauge wire; this is not the "consumer grade" junk you can find at the parts store.
Or, I can have my harness builder custom build you a ready-to-install harness assembly using the same components. Cost for this option is $143 (including parts and labour - you pick _either_ one relay kit _or_ one custom-built harness to do the entire job. It costs more than the $40 to $90 cheapy prefab harnesses because it is not a cheapy prefab harness). Installation is simple: you run the marked wires to battery positive and to battery negative, snap the harness plug onto one of the vehicle's original headlamp sockets, snap the harness sockets onto the headlamps, and secure the cable runs and relays neatly out of harm's way.
The in-car switches continue working normally, and you will not need to cut or otherwise disturb any of the vehicle's original wires.
> 2) Two Cibie 7" H4
The Cibie headlamps are available either plain ($77.95/ea) or for $1 more with a built-in parking lamp ($78.95/ea). This is a small 5w bulb ($4.24/ea) that sticks through the lamp's reflector into the lamp itself, a couple of inches away from the main headlight bulb, via a socket and grommet. "City light" is a common casual term for this. The official European/international term is "front position lamp". North American terminology calls them "parking lamps". It is _only_ a parking lamp, not capable of producing an effective or legal daytime running light or turn signal function no matter what bulb is installed. Electrical connection is by two standard 1/4" spade terminals. Ground one, and run the other to the vehicle's parking lamp feed. The city light illuminates the whole headlamp in a "pilot light" sort of fashion; this makes for large-area parking lamps, and if a headlight bulb ever burns out, oncoming traffic still sees you as a double-track vehicle. Outside North America, parking lamps must emit white light, the North American style amber ones are not allowed. In North America, parking lamps may emit white or amber light, and these white ones built into the headlamp are a legal form of parking lamp in the USA and Canada.
> 3) Two quality bulbs (moderate watts)
Osram 70/65w, $22/ea."
For what it's worth, I purchased/installed the Osram 70/65w bulbs, and they're more than adequate even for irresponsible night time driving.