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02-25-2014, 12:46 AM | #1 |
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Location: magalia,ca
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Adding 3rd brake light
I was wondering how hard It would be to add a 3rd brake light to a non 3rd brake light truck cab. As far as wiring.
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1970 2wd 3/4 ton- 2004 crate 350 thorley tri-y headers-edelbrock performer eps manifold 600cfm performer carb, crane cams energizer cam,lifters, dual 2.5 magnaflows, mallory HEI, powermaster 140 amp altenator, griffen aluminum radiator.(8 MPG) |
02-25-2014, 12:49 AM | #2 |
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Re: Adding 3rd brake light
Not really, you'd need a template for the cargo housing, a cargo light, and would need to route a wire through your cab like the dome light, go out the firewall through one of the existing grommets, and tap into your brake light wire on your harness.
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2018 Chevy Crew Cab 2006 Impala SS 1965 Plymouth Sport Fury 1970 Chevy Longhorn
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02-25-2014, 10:52 AM | #3 |
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Re: Adding 3rd brake light
Ya what he said...
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02-26-2014, 01:22 AM | #4 |
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Re: Adding 3rd brake light
Is that how the factory setup is? Maybe lmc sells a pre made wiring set up. Even though it would not be hard to make your self.
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1970 2wd 3/4 ton- 2004 crate 350 thorley tri-y headers-edelbrock performer eps manifold 600cfm performer carb, crane cams energizer cam,lifters, dual 2.5 magnaflows, mallory HEI, powermaster 140 amp altenator, griffen aluminum radiator.(8 MPG) |
02-26-2014, 01:39 AM | #5 |
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Re: Adding 3rd brake light
The factory setup was only a cargo light, not a brake light. The wire from the cargo light would run parallel to the dome light wire and plug into the fuse box.
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2018 Chevy Crew Cab 2006 Impala SS 1965 Plymouth Sport Fury 1970 Chevy Longhorn
70 Longhorn CST Build Adding an AM/FM Decal |
02-26-2014, 02:05 AM | #6 |
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Re: Adding 3rd brake light
Cool idea
Red led light with the factory clear lens |
02-26-2014, 05:33 AM | #7 |
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Re: Adding 3rd brake light
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1968 RS Camaro 'Vert Matching number 327 and M21 Muncie 1968 C10 Black with red interior and orig paint. 5.3 / 4l60e,3:73 POSI 17" Torq Thrusts 1968 CST 514 Red with black interior. Buddy Buckets, Factory A/C, PS, PB- 20" AR custom shop TT, 5.3 and 4l60e |
02-26-2014, 05:58 PM | #8 |
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Re: Adding 3rd brake light
well I had sort of a different idea other than stock
http://www.gorecon.com/product.php?p...-LENS&p_cat=48
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1970 2wd 3/4 ton- 2004 crate 350 thorley tri-y headers-edelbrock performer eps manifold 600cfm performer carb, crane cams energizer cam,lifters, dual 2.5 magnaflows, mallory HEI, powermaster 140 amp altenator, griffen aluminum radiator.(8 MPG) |
02-26-2014, 06:33 PM | #9 |
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Location: Coppell, Texas
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Re: Adding 3rd brake light
I'm doing mine as we speak, but its the stock conversion style with LEDs.
Running the wire is really easy. Pull the exterior cargo light and the interior dome light. You will see that both lights have loose wiring that travels in the cavity over to the drivers side area where the fuel filler enters the cab. You can just feed the one positive wire right next to them with no fish rod or anything. Its wide open and easy to do. Chase that single wire under the carpet up to the fuse panel and tap into the rear brake lamp fuse location. Make sure to tap in at the out-going side of the fuse panel so you don't bypass the safety of the fuse and end up frying your $300+ fancy brake lamp. The ground can be joined right there into the same line as the Cargo and Dome lamp.
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