[TR] TR3A Fog/Spot Lamp wiring question #2

[cfmtr3a at verizon.net]

I understand the need to wire separately and had planned on doing so except for the initial feed off the 'switch'.  I am not sure if I understand the 'on with park' or 'on with main' - controlling fog/spot with switch.  

The scheme outlined below is, I believe, a 'turn on' when needed system.  Also,the switch is either fog or spot - cannot be both - rotary with fog on right; spot on left which lines up with what you are saying about placement..  

Thanks Phil for the input - I now just need to figure out the relay placement, the wire gauging, and color scheme..  :O)


Nov 25, 2010 04:43:45 PM, pebarnes71 at gmail.com wrote:

I would wire them to operate independently, since in fog a spot lamp is useless/dangerous. Mount the fog on the passenger/right side, the spot on the left. In fog you want to see the stripe on the side of the road. When conditions are clear, the spot will illuminate the middle of the road for a long distance.If you think you're going to be driving in heavy fog, wire the fog lamp to come on with the parking lamps, so you aren't fighting the dipped beams. Similarly, wire the spot lamp to come on/off with the main beams, but be able to disable it via the switch.
 
Let me know if you need help with the wiring logic of this arrangement.
 
Lessons learned from years of rallying in the dark.
 
--Phil Barnes, '71 TR6 since 1977