 Aux brake light in the cockpit, wiring help needed |
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| Trekkor |
 Dec 4 2006, 01:57 PM
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#1
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I do things...  Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California  |
I have a small red light that I want to install so i can see "brakes on" in my videos.
i will mount the light onto my Hot Lap display. What are the wires to take power/ground from on top of the tunnel harness? ( colors? ) '74 tub... KT |
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| Brad Roberts |
Dec 4 2006, 02:01 PM
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#2
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
Pull the pedal board back. The switch for the brake lights is on the pedal cluster. The wire running to the back from the switch is the one your need. I just looked at the color last week while I was trimming out several pounds of wiring in a AutoX 914 down here.
I'll call you back in a few minutes. I'm on hold with yet another vendor... B |
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| jhadler |
Dec 4 2006, 03:17 PM
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#3
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Long term tinkerer... Group: Members Posts: 1,879 Joined: 7-April 03 From: Lyons, CO Member No.: 529 |
I'd probably want to make it as small, and unobtrusive as possible. I think I'd rather rig up a small LED and place it behind me in such a way that the camera sees it, but I don't. Nothing more distracting than diving into turn 1 under brakes and see a red light near the dash. Even if I know what it is...
I'm sure others have their own philosophy about dash instrumentation. But for me, on the track, I wouldn't want any lights going on or off in my field of view unless they're lights that are telling me something IMPORTANT. How about a small red LED for brakes, and wire up a bar graph LED to a Throttle Position Sensor on the throttle shaft. Then you've got telemetry!!! (IMG:style_emoticons/default/smile.gif) -Josh2 |
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| grantsfo |
Dec 4 2006, 03:37 PM
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#4
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Arrrrhhhh! Group: Members Posts: 4,327 Joined: 16-March 03 Member No.: 433 Region Association: None |
Gotta love low tech telemetry. I'm sure you can buy all this stuff at Home Depot. You could get LED Chistmas lights for differnt colors on throttle response. (IMG:style_emoticons/default/biggrin.gif)
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| jhadler |
Dec 4 2006, 03:44 PM
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#5
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Long term tinkerer... Group: Members Posts: 1,879 Joined: 7-April 03 From: Lyons, CO Member No.: 529 |
Oh, and add a little weight hanging from a string off the rear view mirror to indicate lateral G's!
Low tech telemetry to make the fancy F1 systems quiver in their boots... :-) Actually, that one's not new. I had an instructor once that would hang a small bell from the mirror. If the bell rang, you weren't driving smoothly engough. Certainly wouldn't want that hanging there during competition, but for practice (and occasional daily driving), it was a great driving aid. -Josh2 |
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| McMark |
Dec 5 2006, 03:07 AM
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#6
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
You could add a rod to the throttle pedal to actuate a potentiometer and then mount an ohm meter in the field of view so you can see % of throttle. (IMG:style_emoticons/default/wink.gif)
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| Trekkor |
Dec 5 2006, 12:04 PM
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#7
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I do things... Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California |
I will include a switch in the center console to turn off the light when I'm not running video, which is most of the time.
I like the throttle position light idea, too (IMG:style_emoticons/default/idea.gif) I understand low voltage magnetic switches, like the the ones for home security systems, work well. ( off, mid, full ) KT |
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| ConeDodger |
Dec 5 2006, 12:30 PM
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#8
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Apex killer! Group: Members Posts: 23,577 Joined: 31-December 04 From: Tahoe Area Member No.: 3,380 Region Association: Northern California 
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QUOTE(jhadler @ Dec 4 2006, 01:44 PM)  Oh, and add a little weight hanging from a string off the rear view mirror to indicate lateral G's! Low tech telemetry to make the fancy F1 systems quiver in their boots... :-) Actually, that one's not new. I had an instructor once that would hang a small bell from the mirror. If the bell rang, you weren't driving smoothly engough. Certainly wouldn't want that hanging there during competition, but for practice (and occasional daily driving), it was a great driving aid. -Josh2 Simpler still would be a glass of water RTVed to the dashtop to give an artificial horizon. Trek you have GOT to get some Home Depot sponsorship! |
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| Aaron Cox |
Dec 5 2006, 04:28 PM
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#9
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
anyone remember the 'hotrod' magazine's low cost G-meter?
they used a big gulp cup laid out on teh dash LOL |
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| Trekkor |
Dec 11 2006, 06:15 PM
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#10
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I do things... Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California |
I ran with the light yesterday. worked perfect and was not distracting at all.
Installed the in-console switch, too. Another successful project. KT |
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