Reverse parking sensor installation?

[budgetwam]

I bought reverse parking sensors for my '03 runner and the power needs to tap into the reverse lamps. Looking at the driver side taillight, there is 1 harness plug with 5 wires. Would anyone know which wires I should splice into?

 

[leftyguns21]

I bought reverse parking sensors for my '03 runner and the power needs to tap into the reverse lamps. Looking at the driver side taillight, there is 1 harness plug with 5 wires. Would anyone know which wires I should splice into?

not sure which one,. but should be able to follow the wire to the reverse lamp there will be a ground and power. the 4runner is (last i checked?) a grounding car meaning the light is supplied w. power and then when lights come on they get grounded. so you would just use a test light to find which wire goes live. have someone help you w. that. thats one way...someone may have a diagram w. the colors which would be easier.