Wait To Start Light *BLINKS*

[rvaughn801]

Twice in as many weeks my WTS light starts blinking when:

1. Truck is warmed up
2. Shift into Reverse
3. Radio, dash, lights all look fine

Stays blinking until I shut it off. Does not blink if I restart it.

This seems like an electrical problem. I searched old posts and found advice to clean the grounds. After the first WTS Blink episode, I cleaned the one that goes from the battery to the radiator support, and the one from the block to the alternator.

While I am on the topic, I am convinced my grid heaters do not work work as they were intended. The "WAIT TO START" has only come on a hand full of times, in weather so cold that I would have been better off to plug it in.

The only way to get the heaters to work is to turn the key through "ON" and almost to "START" until I hear the click. I know it will start in negative degree temps. But I cannot let the wife drive it in really cold weather and be confident she will get a WTS light.

Is there a simple fix for this?

Are the grid heaters problematic enough to be eliminated (and depend on plugging in for low temps)?

I appreciate your help.

-Rich