Just finished my reverse lights and thought i'd share. Had some old POS fog light housing's sitting around. Decided to buy some 9W LED's to retrofit into the housing. This is designed to either go on manual mode, when the switch is on or when the truck is in revese automaticaly. The best way to do it by far. There isnt a write up on this style yet so I decided to make one.
-16 guage wire, enough to get you under the truck, to the engine and into the cab
-SPDT switch (single pole, double throw) I used a center off style.
-12v auto relay
-Fuse tap W/10A fuse(replacing existing) and 5A fuse(for lights)
**Use acording fuse for the wattage of lights installed**
-In line fuse w/5A fuse
-Blue/Red size Crimps
-Female Crimp connectors (Image below)
-Good quality crimps
-Volt meter, not required but comes in handy
Heres my lights, I bought my LED's through a local guy in Vancouver. I'm sure you can find them online.
Heres my switches. The paddel is for the lights. Up is Auto, center is off and bottom is manual.
Other switches are for my bed light and floor lights.
This is not my diagram, It came from TTORA - Wrooster, i have modified it to make it easier
1. take the fuse tap, with correct size fuse, and connect it to a filled location in the fuse box. I would use the tail lights fuse location (10A).
For the top 2 rows of the fuse box the tap MUST have the wire pointed up. On the bottom row, the wire points down. The first fuse slot on the tap (closest to the box) is for the origional fuse (ex Tail lights) and you Must use the same fuse you took out of the slot. The second slot, (closest to you/the wire) is for the fuse your connecting to.
In my Second row(picture below) you can see the tap is pointed up and I have a 10A red fuse (for the ignition) and a 5A orange fuse (for the lights). ITS NOT RECOMENDED TO USE MORE THEN A 10A FUSE IN THE FUSE TAP.
Theres a write up on how to use fuse taps here:
2. to the fuse tap crimp a wire going to the 85 lead on the relay and a wire with the inline fuse/switch. What this does is gives a signal through the switch to the 87 lead. when the 87 lead has a signal it draws power through the 85 lead (fuse tap).
3. from the relay connect a wire from the 87 pole to the center switch, 86 to ground and 30 to your lights. Your lights must also be grounded at either the bumper area or wired back up to the cab to be grounded. I ran the wire through the fire wall, under the cab along with the wiring for the tail lights.
4. There is a 16guage red/white stripe wire coming from the top left of the connection. You need to cut and tap that wire to get the signal from the reverse lights. A wire splice would be easiest but crimps work.