diff --git a/conf/template/uvw_fb1.txt b/conf/template/uvw_fb1.txt
index 12609d61..5dd6b451 100644
--- a/conf/template/uvw_fb1.txt
+++ b/conf/template/uvw_fb1.txt
@@ -8,4 +8,5 @@ fb_switch0.com_abs_pos = rev2.out
 fb_switch0.com_state = 3
 fb_switch0.com_polecount = conf0.com_fb_polecount
 io0.fb1g = 1
+io0.fb1y = uvw0.led
 conf0.com_fb_polecount = conf0.polecount
diff --git a/shared/comps/uvw.c b/shared/comps/uvw.c
index 26ac122c..12875934 100644
--- a/shared/comps/uvw.c
+++ b/shared/comps/uvw.c
@@ -11,6 +11,8 @@ HAL_PIN(u);
 HAL_PIN(v);
 HAL_PIN(w);
 
+HAL_PIN(led);
+
 HAL_PIN(p0);
 HAL_PIN(p1);
 HAL_PIN(p2);
@@ -43,6 +45,7 @@ static void rt_func(float period, volatile void *ctx_ptr, volatile hal_pin_inst_
   struct uvw_pin_ctx_t *pins = (struct uvw_pin_ctx_t *)pin_ptr;
 
   uint32_t rpos = (PIN(u) > 0.0) * 1.0 + (PIN(v) > 0.0) * 2.0 + (PIN(w) > 0.0) * 4.0;
+  PIN(led) = (PIN(u) > 0.0) ^ (PIN(v) > 0.0) ^ (PIN(w) > 0.0);
   //TODO: make this const, fault output
   uint32_t t[8];
   t[0]      = PIN(p0);