No one understands this question because you do not say what is going in reverse. Please improve this question for an answer.
what to do if my reverse lights on my 1993 gmc 1500 truck wont work
check the reverse light switch and all connections
1 bulb blown 2 fuse blown 3 open circuit in reverse light wiring 4 bad earth contact on reverse light 5 reverse light switch faulty 6 indent in gear box fault causing switch not to operate.
Try the fuses.
I have a 2002 Genesis I and I have to hit the reverse button a couple times to get it into gear. If the light is flashing it is on in reverse that is why you don't have power i n reverse
Reverse light switch bad or out of adjustment.
head lights won't work, no power to them, signal works , reverse lights work
check the fuse
There is a switch called the reverse backup light switch attached to the shifter. When you move the shifter into reverse, the switch is closed and current goes back to the reverse lights. The switch is located on both auto and manual trans. After making sure your bulbs are good, that is where I would look. And make sure your fuses are not blown as well in your fuse block. There usually is not just a circuit dedicated to reverse lights only but there is always something a manufacturer will do some years just to be different.
The problem is the reverse light switch. It is located on the top of the transmission that should sloved your problem.
You will need to check the ground wires. A loose ground wire can cause the lights to work sometimes and sometimes not to work.
the reverse light switch is either out of adjustment. or broken. new one should be fairly cheap