the horn of my Toyota cressida dosent work and the fuse are ok.
Possibly the headlight relay underhood or headlight module behind glovebox
Check fuses and relay if you have one.
replace the light module
The clock in my 1989 toyota van soes not work. What can be the problem?
yes. you can swap them. they are the same engines. even the wiring harness is the same
on some vehicles the gas light will still work if the gauge does not. on some vehicles such as an 1985 Toyota cressida have a separate sensor allowing the low fuel light to illuminate.
You will need to remove the gauges and dash . I did it at a junk yard it was lots of work . Also , you will not need unusual tools on the upside.
What vehicle is this for?
You need to check the wiring around headlights, fuses and the bulbs.
There is many reason, check fuse,check amplifier and check head unit. Otherwise install an aftermarket radio probably the best thing to do. Pretty simple follow this link http://www.installdr.com/Harnesses/Toyota-Wiring.pdf
that sounds like i ground in the bake by the lights or if it has a trailer plug i would start their