Unlit alpha shader makes my object transparent?

I am using a shader entitled, "Unlit/UnlitAlphaWithFade", (detailed below) to tint only certain parts of my 3D player while maintaining their flat, spritish look. However, I am having a problem: The shader makes my parts invisible unless a solid part of the character is directly behind it, or I have a solidly shaded material behind the material this shader is on. I have tried to parse some of the shader code, but I'm not experienced here. Can anyone help me out?

  Shader "Unlit/UnlitAlphaWithFade"
 {
 Properties
 {
 _Color ("Color Tint", Color) = (1,1,1,1)
 _MainTex ("Base (RGB) Alpha (A)", 2D) = "white"
 }
 Category
 {
 Lighting Off
 ZWrite Off
 //ZWrite On // uncomment if you have problems like the sprite disappear in some rotations.
 Cull back
 Blend SrcAlpha OneMinusSrcAlpha
 //AlphaTest Greater 0.001 // uncomment if you have problems like the sprites or 3d text have white quads instead of alpha pixels.
 Tags {Queue=Transparent}
 SubShader
 {
 Pass
 {
 SetTexture [_MainTex]
 {
 ConstantColor [_Color]
 Combine Texture * constant
 }
 }
 }
 }
 }