Will, the blinkers and the brakes are not connected. If you are having to use a lot of force to push your brakes, you have lost your power assist. here is how your nrakes are supposed to work When the brake pedal is depressed, a vacuum builds up in the booster which amplifies the pedal force, pressing on the piston in the master cylinder. The piston movement raises the hydraulic pressure in the cylinder. This hydraulic pressure is then applied to each respective brake cylinder and wheel cylinder, and acts to press the brake pads and shoes against the rotating discs and drums. The resulting friction converts the rotational energy to thermal energy, stopping the vehicle. So if your brake booster fails, you will have to apply more force. So, it is possible that your Booster push rod is out of adjustment or that you have a vacuum leak on your booster system. so, first check your brake booster
1. OPERATING CHECK
(a) Depress the brake pedal several times with the engine off, and check that there is no change in the pedal reserve distance.
(b) Depress the brake pedal and start engine. If the pedal goes down slightly, operation is normal.
1. ADJUST LENGTH OF BOOSTER PUSH ROD
(a) Install the gasket on the master cylinder.
(b) Set the SST on the gasket, and lower the pin until its tip slightly touches the piston.
(c) Turn the SST upside down, and set it on the booster.
(d) Measure the clearance between the booster push rod and pin head (SST).
0 mm (0 in.)
(e) Adjust the booster push rod length until the push rod lightly touches the pin head.
For your indicator, it sounds like a bad relay.
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