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Re: zeke's Monza

PostPosted: Tue Jan 09, 2018 8:00 am
by zeke
spencerforhire wrote:Now if you do the same thing to the hatch keyhole cover, you could use it as a 3rd brake light....


I am planning to do the rear one as well but it isn't near bright enough to see in the daylight. Will be just accent lighting hooked to the marker circuit.

Re: zeke's Monza

PostPosted: Tue Jan 09, 2018 4:11 pm
by spencerforhire
I was sort of kidding, but I'm sure it will look cool just on the tail light circuit. Obviously, that single LED wouldn't really be bright enough for CHMSL(that's how it's referred to in GM wiring diagrams).

Re: zeke's Monza

PostPosted: Wed Jan 10, 2018 6:25 pm
by zeke
I'll take a guess, Center High Mounted Stop Lamp

The LED chip is rated for 260 mA but at that current level, the plastic emblem would get damaged - way too hot. I experimented with different values for R1 and ended up with 68 ohms. Best compromise between luminosity and heat. R1 needs to be a 5 watt ceramic power resistor. All testing was done at 14.2 volts with peaks of 15v as this is where most GM alternators have there control voltage set to.

I ground a trough for the wires and epoxied them down. Bits of heat shrink tubing were used, a 2 pin molex connector and everything was soldered. Got to sand the epoxy flat on the emblem backside yet, drill a hole in the fascia, emblem mount area, for the connector to pass thru and wire in the connector to the marker circuit.

Resistor: https://www.digikey.com/products/en?key ... 5JB68R0-ND

Re: zeke's Monza

PostPosted: Thu Jan 11, 2018 7:13 pm
by waybad
AWESOME!!!

Re: zeke's Monza

PostPosted: Thu Jan 11, 2018 10:47 pm
by zeke
Thanks Waybad!

Finished up the LED front emblem mod install tonight. Short video clip here: https://www.youtube.com/watch?v=a2NOErq9Juw

:dance:

Re: zeke's Monza

PostPosted: Fri Jan 12, 2018 11:25 am
by vegastre
Wow!
I concur, that is awesome. I may copy the idea :th: :th: