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-   -   12v erratic tach and dash lights. (https://www.dieselbombers.com/12-valve-2nd-gen-dodge-cummins-94-98/131205-12v-erratic-tach-dash-lights.html)

Snowballs Chance 07-29-2016 09:06 PM
12v erratic tach and dash lights.
 
So about a month ago my trucks tach started jumping on me as well as the CEL, Gen, WTS, and CC green light. It's fine at idle, it blips when I drive though, bumps really throw it through a loop. I unplugged my ess and it just made it where any throttle throws the lights. I'm at a complete loss. Bad ESS? or am I going to be spending hours tracing wires to find a short or bad ground. Also my ABS and brake light are always on any info on that would be great. Thanks in advance . I'm tired of watching it go crazy.:dang::argh::ouch::s:

JBearSVT 07-30-2016 04:43 PM
Could be the dash harness. Hope it isn't.

richie0112a 11-29-2016 04:30 PM
Did you come up with a solution?

Originally Posted by Snowballs Chance (Post 1117279)
So about a month ago my trucks tach started jumping on me as well as the CEL, Gen, WTS, and CC green light. It's fine at idle, it blips when I drive though, bumps really throw it through a loop. I unplugged my ess and it just made it where any throttle throws the lights. I'm at a complete loss. Bad ESS? or am I going to be spending hours tracing wires to find a short or bad ground. Also my ABS and brake light are always on any info on that would be great. Thanks in advance . I'm tired of watching it go crazy.:dang::argh::ouch::s:


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