Basic Wiring Info
by Reese Products
2 Wire System
-
Are vehicles that have the turn signal and brake lights operating
on the same bulb and wire. - Up to 7.5 amps per circuit (per SAE specifications).
- It will have an electrical code of "A" in the paper catalog.
3 Wire System
- Are vehicles that have the turn signal and brake light use different bulbs and wires.
- Up to 4 amps per circuit (per SAE specifications).
- It will have an electrical code of "B" in the paper catalog.
Estimating Trailer Amperage Per Circuit:
| Stop-Turn Lights |
 |
2 Amps each |
| Taillights |
|
1 Amp each |
| Clearance and Marker Lights |
|
1/2 Amp each |
|
|
||
| NOTE: For estimating use only. Amperage is rounded to the nearest whole value and may not apply in all cases. | ||
