1985-1998 [Subscribe to Daily Digest] |
As has been already discussed, just buy a spare switch from a parts yard (like I did). Switches for '91 and later should work, as those for my present '95 are the same as for the '91 I once owned, but I don't know about earlier models. I seem to recall my '86 having the same switches, though.
One way to connect them electrically is to use the high-beam circuit to trip the relay. You probably will not ever want the driving lights on with low-beams, so wiring in this way will automatically switch the DL's off when you dip your headlights. You would splice the relay's secondary circuit to the relay and the primary to a 12V source that can handle high amperage. Since these lights may draw up to 17a (if 100w bulbs, 9a if normal 55w), you'll need to plan accordingly for the primary source. The secondary source (tripper circuit) does not require high amperage so you needn't worry about it overloading the high-beam circuit.
I would run the switch through the secondary source. IOW, when the switch is on and the high-beams are activated, the driving lights are also on. If either the switch or high-beams are off the driving lights are also off.
Accordingly, if the high beams are on and you don't want the driving lights on, just deactivate the switch. I've wired several cars in this manner and it works well.
These stock fog-light switches are more complex than you might imagine. Take one apart and you'll marvel at its design. They have several connectors on the back, some for the main circuit and two for interior illumination of the switch (bright when activated, dim when not). Check a service manual for the schematic, or let me know and I'll sketch it out for you.
posted by 68.11.251...
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