Common problems
R107 Turn Signals Not Working: Flasher Relay and Combination Switch
Why R107 turn signals stop working or flash fast: the flasher relay, bulbs and sockets, the combination switch and the hazard switch.
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Common problems
R107 Battery Keeps Dying: Finding a Parasitic Drain
How to find what is draining an R107 battery: normal drain, the multimeter test, common culprits, disconnect switches and battery tenders.
Common problems
R107 Cruise Control Not Working: Amplifier and Actuator
How the R107 cruise control works, why it stops working, and how to test the brake light link, switch, actuator and amplifier.
Common problems
R107 Heater Blower Not Working
Why the R107 heater blower does not work on some or all speeds: the fuse, relay, switch, resistor and motor, plus what replacement involves.
Common problems
R107 Wipers Not Working: Relay, Switch and Motor
How to troubleshoot R107 wipers that do not work: the relay, the combination switch, the wiper motor, the linkage and the washer pump.
Common problems
R107 Horn Not Working
How to find out why an R107 horn does not work: fuse, horn relay, the steering wheel horn contact and testing the horns themselves.
Common problems
R107 Instrument Cluster Removal and Dash Lights Out
How to remove an R107 instrument cluster, change the bulbs, fix dash lights that are out and find out why a gauge stops working.
Common problems
R107 Clock Not Working
Why the R107 clock stops, how to check the fuse, remove and clean the clock, and whether a quartz conversion is worth it.
Common problems
R107 Ignition Switch: Key Won’t Turn or No Crank
Why an R107 key will not turn or the car will not crank: the difference between the mechanical lock and electrical switch, symptoms, removal and key options.
Common problems
R107 Headlight Switch Problems
R107 headlight switch problems: symptoms, how the switch works, how to remove it, what the dash light dimmer does and when to replace it.