Gauge cluster head lights and heater don't work

[Ca18det d21]

Alright I got an 89 hardbody and it's acting crazy when I drive and hit a bump everything works the dash comes on the lights work and the heater works but if I turn it off and go to start it againg I have to drive it and hit some bump again for it to work any idea what could be the problem

[Ca18det d21]

Now I rev it hard and it comes on but when I turn it off and restart it I hve to rev it again and rev it and then it comes back on

[seang]

Like a bad relay somewhere, or maybe you just don't have enough voltage. I can't say for sure because I don't know the system to a tee.

[dvdswan]

bad ground or corroded connection

[RT22]

Yeah pull the dash apart and start tugging wires, bet money it will pop on and off, then isolate as you can.

[RT22]

First thing is check behind radio, have heard of this kind of crap when a aftermarket radio is not hooked up correctly. Especially if the ground has been messed with.

[waynegarcia13]

promise you it is the positive battery cable. There is a few wires there going to different parts but they get corroded easy i personally cut and replaced mine

[aaa911]

Now I rev it hard and it comes on but when I turn it off and restart it I hve to rev it again and rev it and then it comes back on

I am a novice, want to share with you the next joint on the Logistic Manufacturing Equipment Materials aspects of these vehicles

[AZhitman]

Hello everybody, I am a novice, I am English, not very good, very pleased to join the forum and share with everyone

Yes, we know. Welcome to the forums. Please start a new thread in order to introduce yourself, so that you don't interrupt this thread.

Thanks.