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Brake Light Switch


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When I hook a hot wire to one side of the switch and check the other side with a meter, without depressing the pedal I get a reading ....does that mean the switch is bad?????

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it could be an indicator that you have some sort of restriction in the system prevent full return of fluid to the master and thus showing an indication of residual pressure.  Suggest you visit your return passages in the master reservoir for free and clear, ensure your master has returned fully to the rear and against the stop to ensure no damage to a seal when checking for obstructions.  

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45 minutes ago, NiftyFifty said:

I would lift and check for wheel drag if you thought is was residual pressure issue, but also those pressure switches are well known for failing, but typically in a no signal way, not on all the time

TY........

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55 minutes ago, Plymouthy Adams said:

it could be an indicator that you have some sort of restriction in the system prevent full return of fluid to the master and thus showing an indication of residual pressure.  Suggest you visit your return passages in the master reservoir for free and clear, ensure your master has returned fully to the rear and against the stop to ensure no damage to a seal when checking for obstructions.  

 

55 minutes ago, Plymouthy Adams said:

it could be an indicator that you have some sort of restriction in the system prevent full return of fluid to the master and thus showing an indication of residual pressure.  Suggest you visit your return passages in the master reservoir for free and clear, ensure your master has returned fully to the rear and against the stop to ensure no damage to a seal when checking for obstructions.  

 

Just now, Johnny Reb said:

TY........

TY.................

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56 minutes ago, Plymouthy Adams said:

it could be an indicator that you have some sort of restriction in the system prevent full return of fluid to the master and thus showing an indication of residual pressure.  Suggest you visit your return passages in the master reservoir for free and clear, ensure your master has returned fully to the rear and against the stop to ensure no damage to a seal when checking for obstructions.  

 

47 minutes ago, NiftyFifty said:

I would lift and check for wheel drag if you thought is was residual pressure issue, but also those pressure switches are well known for failing, but typically in a no signal way, not on all the time

TY..................

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