Installing JDM rear fog light as a brake light

Lannyl81 · 01-29-2022, 06:53 AM

There is only one way to get the rear fog lamp to function as a 4th brake light and that is to tap into the brake light wiring harness at the rear light using a new harness between them.
The factory wire harness at the rear fog lamp is for....gee....a rear fog lamp. To make a fog lamp requires either an easy wiring modification and a switch or swapping the combo switch with the one that is listed above. If going the combo switch swap, to be 100% complete, the instrument panel needs to come out so that an LED can be soldered in place to illuminate the rear fog lamp indicator.
There is one person on here that has done this and did a write-up on it. Quite expensive in $$$ and time to do so. But he probably has the ONLY USA 370Z with a factory rear fog lamp.

01-29-2022, 06:53 AM	#1 (permalink)
Lannyl81 Base Member Join Date: Jun 2021 Location: Tucson Posts: 58 Drives: 2018 370Z Sport M6 Rep Power: 4	There is only one way to get the rear fog lamp to function as a 4th brake light and that is to tap into the brake light wiring harness at the rear light using a new harness between them. The factory wire harness at the rear fog lamp is for....gee....a rear fog lamp. To make a fog lamp requires either an easy wiring modification and a switch or swapping the combo switch with the one that is listed above. If going the combo switch swap, to be 100% complete, the instrument panel needs to come out so that an LED can be soldered in place to illuminate the rear fog lamp indicator. There is one person on here that has done this and did a write-up on it. Quite expensive in $$$ and time to do so. But he probably has the ONLY USA 370Z with a factory rear fog lamp. Last edited by Lannyl81; 02-05-2022 at 09:33 AM.

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