pauli

Recently, EVERY dashboard light on my wife's 1990 LS400 came on and stayed on while the vehicle was running. So far, this has not hindered the vehicle's performance but I wonder if this problem might be linked to a failing alternator. (Turning on headlights has not caused a problem in the short term.)

I am afraid to let her drive it beyond short distances until we figure out what's wrong.

Anyone else had this problem?

Thanks!

LScowboyLS

you can quickly check the alternator with a voltmeter across the battery - get us the voltage with car off, car at idle and car at 2500 rpm in park and post the 3 voltages you get

sometimes the main power feed connector to the dash cluster becomes loose, I would unplug and replug that, make sure to squeeze the tab when disconnecting

also sometimes the dash cluster circuit board electrolytic capacitors fail

PureDrifter

iTrader: (10)

9/10 times on a 1LS...
http://www.lexls.com/tutorials/lighting/bulbout.html

pauli

Thanks for the advice!

pauli

Thanks a lot. I'd say the trunk wires are the likely suspect here.