Reverse Light/neutral safety switch

[Muddemon]

Ok. I need your help. I just perforrmed the jumper cable test on my 2 prong reverse light switch on my 70 c10 stepside with 350 v8 and th375. I appears that my switch is nkot working as the reverse lights turned on with the jumper. All other lights are working just fine. My question is whether the 2 prong reverse switch is correct or should i have the reverse switch/nuetral safety combo on my collumn. Trans is auto with a floor shifter.