Electronic trouble shooting
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Launching!
Joined: Oct 2012
Posts: 219
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From: near Beech Bend race way
Electronic trouble shooting --------------------------------------------------------------------------------
Has anybody attempted to use an adjustable resistor in their late modle f body wiring harness to address a lying oil pressure guage in their instrument panel, i have done this on older stuff but not sure how it would do going through a module ???i have an adapter to put in place of the oil filter to read the oil pressure . Open to any thoughts
Has anybody attempted to use an adjustable resistor in their late modle f body wiring harness to address a lying oil pressure guage in their instrument panel, i have done this on older stuff but not sure how it would do going through a module ???i have an adapter to put in place of the oil filter to read the oil pressure . Open to any thoughts
Launching!
Joined: May 2012
Posts: 209
Likes: 1
From: NC
You could use the potentiometer to adjust the voltage difference to the desired amount needed, however ohms law comes into play here. Voltage is inversely proportional to resistance - the greater the resistance becomes the less current that will become available. So if the panel is expecting a certain current level you will need a buffer driven by either a follower design from a 12V supply or single rail op-amp to keep both voltage and current within proper spec. How far off would depend on how far of a drop in current results.
FWIW - the only way the current would come into play would be whether the oil pressure gauge is digital and requires a bias current in order to also drive the LCD screen. If the oil pressure gauge is analog then you should be fine to use the potentiometer without any problems.
FWIW - the only way the current would come into play would be whether the oil pressure gauge is digital and requires a bias current in order to also drive the LCD screen. If the oil pressure gauge is analog then you should be fine to use the potentiometer without any problems.
