Where is the relay located for the turn signals on an 89 plymouth sundance? The lights work on the signals, but don't blink when you turn them on

Hi Bradley,it could be your stop light switch,could be loose or bad,it's connected to your brake pedal,here's a link to what it look's like. http://www.autozone.com/electrical-and-lighting/stoplight-switch/duralast-stoplight-switch/plymouth/sundance/1994/4-cylinders-k-2-5l-tbi-sohc/184660_0_0

may be you need a tool and you can find it here: spobd2.com

did you check you blinker switch ?ots a big silver part that should be under your driver side

Hi, there is a flasher relay behind the glove box. Find this, pull it straight out of the socket and replace it. You can get one at any auto parts store.

cooling fan does not come on at all

Maybe a relay or fuse is bad or the wiring to it.

But you said that the third brake light works.

So the brake switch must be ok.
Turn signals would be the flasher or wiring to it.
CIRCUIT PROTECTION Fuse Block Fig. 1: The fuse box is located under a cover at the lower left instrument panel — 1987 Voyager shown
The fuse block and relay bank is located on the driver's side under the lower instrument panel. The fuse block contains fuses for various circuits as well as circuit breakers, horn relay, ignition lamp thermal time delay, and the turn signal flasher. The hazard warning flasher is mounted into a bracket below the fuse block. The individual fuse and relay locations can be found in the wiring diagrams at the end of this section.
is bad.

Quite often you'll find resistor on firewall, of passenger side under hood. 1-1/2"x3" block attached to firewall. In area of where heater hoses enter.

Without taking the ignition apart, you will really have to do some work, what you might want to do is get in the passenger side, grab the key with a good set of pliers, and get some leverage. If you grab, move the key back and forth while jiggling the wheel, the lock should come loose and the key should slide out. Be careful not to turn the key too far, because then you'll break it off, hope that works.

first check bulbs and fuses if no success the reverse light switch is located on gearbox sometimes wires come off and other times faulty and need replacing a test lamp on the switch will help to tell you whether or not power is coming out when in reverse to make the lights work

You need a timing belt