2001 electronics malfunctioning

[danhenry47]

All dash lights, gauges go on or off randomly. Sometimes all. Fuel gauge and normal lights (cruise and gear selector go off) and warning lights come on. Not always the same. Very erratic. Bumps make no difference. Now, door locks seem to be included.Also, with radio (aftermarket) off, now have faint static in rt rear speaker. Seems like a bad ground? but where would I begin to look? Any experience with this? Also,could this affect the ride control system? Any electrical or controls commonality? Thanks!

 

[lkraemer]

If it were me, I'd start at the Negative Battery Cable's Battery Connection.
From there I'd move to the other end of that cable and check the connection
on the Engine. After that, I'd look for any additional Ground cables that are attached to the Engine and/or Frame.

You didn't mention anything about Headlights. Are they also changing in brightness as you drive? What about using a volt meter to check the voltage
at the headlights when this happens.

Larry

 

[1380Ken]

Does this happen during the day and at night?

 

[danhenry47]

Have not noticed any headlight isues yet. This does happen at night and during the day. Battery cables looked good but will check again. Thanks for your responses. I appreciate your help!
Dan🙂

 

[1380Ken]

I would look under your drivers seat. There are electrical connections under there that corrode and cause strange problems. I have heard of door lock problems related to that.