Wiring harnesses allow the truck cap to be removed without the need to cut any wires. When wiring a 3rd brake light to your truck cap, topper or camper shell, it is important to pick the correct wiring harness to match your vehichle year, make and model.
Below is a model chart for wiring harness requirements. This can serve as a guide when selecting the correct wiring harness as part of your 3rd brake light installation. All of our wiring harness kits can be browsed in the electrical category.
Click on a Part Number or Harness Kit letter to go directly to that part number.
| Vehicle Model | Year | Harness Kit | Part Number |
| Chevy | 1994 - current | A | C90-801 |
| 1993-prior | D | C90-804 | |
| Dodge | 1998 - current | A | C90-801 |
| 1997 | E | C90-806 | |
| 1994-1996 | C | C90-804 | |
| 1993-prior | D | C90-804 | |
| Ford - Full Size | 1996 - current | A | C90-801 |
| 1994-1995 | B | C90-802 | |
| 1993-prior | D | C90-804 | |
| Ford - Ranger | 1998-1999 | A | C90-804 |
| 1997-1999 | B1 | C90-805 | |
| 2000-2002 | B1 | C90-805 | |
| 1992-prior | D | C90-804 | |
| Jeep Comanche | 1994 - prior | D | C90-804 |
| Isuzu | All Years | A | C90-801 |
| Mazda | All Years | A | C90-801 |
| Mitsubishi | All Years | A | C90-801 |
| Nissan | All Years | A | C90-801 |
| Toyota | All Years | A | C90-801 |
