Driving Light Wiring
Discussion
Have posted this question in the Subaru forum but could be be a view here......
So having cleaned up the headlights of my '04 wagon, aligned them properly and fitted Osram bulbs, I'm still of the view that they're not good enough for what I need.
Impreza has useless front fog lights in the front bumper, an option back in the day was to replace those with top quality driving lights so here we go;
So I've tracked down some of the original Prodrive brackets for this later car and PIAA driving lamps to replace the fogs. I plan to use the existing front fog light switch as a control to activate the driving lamps with main beam only (or not) as required, I don't want any new switches and am keen to keep it all looking as standard as possible.
I've been scratching my head with the wiring options and don't want to touch the main loom or muck about with the switch so I've come up with this using two simple switching relays that I can hide out of the way.
Apologies for the crude sketch but happy to hear any comments especially if you think I can simplify the wiring. The new driving lights draw 260 watts in total hence the 25amp supply to relay 2. The supply from the main beam circuit to relay 1 will draw virtually nothing but I've popped in a 5amp fuse to show willing.
So having cleaned up the headlights of my '04 wagon, aligned them properly and fitted Osram bulbs, I'm still of the view that they're not good enough for what I need.
Impreza has useless front fog lights in the front bumper, an option back in the day was to replace those with top quality driving lights so here we go;
So I've tracked down some of the original Prodrive brackets for this later car and PIAA driving lamps to replace the fogs. I plan to use the existing front fog light switch as a control to activate the driving lamps with main beam only (or not) as required, I don't want any new switches and am keen to keep it all looking as standard as possible.
I've been scratching my head with the wiring options and don't want to touch the main loom or muck about with the switch so I've come up with this using two simple switching relays that I can hide out of the way.
Apologies for the crude sketch but happy to hear any comments especially if you think I can simplify the wiring. The new driving lights draw 260 watts in total hence the 25amp supply to relay 2. The supply from the main beam circuit to relay 1 will draw virtually nothing but I've popped in a 5amp fuse to show willing.
Great stuff, thank you!
You're quite right, I want the spots to only work with the high beam but retain the option to turn them off.
I'm trying to avoid touching any of the existing switch wiring and hope to do all of this from under the bonnet. I can't imagine I'd ever want or need to go back to standard but this makes it much easier.
I don't know enough about what other relay options are out there, I grew up using the old Lucas 6RA for everything! Hoped there might be one unit out there that could do the job of two!
Good point about how the existing lights are powered/switched. I've made a big assumption there and was simply planning to take an activation feed from a high beam supply behind the headlight. Will check when I start the job this weekend.
More than happy to go with protocol over terminal use, us amateurs can't be trusted!
You're quite right, I want the spots to only work with the high beam but retain the option to turn them off.
I'm trying to avoid touching any of the existing switch wiring and hope to do all of this from under the bonnet. I can't imagine I'd ever want or need to go back to standard but this makes it much easier.
I don't know enough about what other relay options are out there, I grew up using the old Lucas 6RA for everything! Hoped there might be one unit out there that could do the job of two!
Good point about how the existing lights are powered/switched. I've made a big assumption there and was simply planning to take an activation feed from a high beam supply behind the headlight. Will check when I start the job this weekend.
More than happy to go with protocol over terminal use, us amateurs can't be trusted!
Gassing Station | Home Mechanics | Top of Page | What's New | My Stuff