how hard is it to wire water temp and oil press. guages on the a pillar
Registered User
Joined: Sep 2001
Posts: 1,268
From: port huron, michigan
well your car already has those so why would you do that?...
anyways, i dont think you can just tape into the sensor wires for the current ones, something to do with voltage!!!
water temp and oil pressure?
donno
anyways, i dont think you can just tape into the sensor wires for the current ones, something to do with voltage!!!
water temp and oil pressure?
donno
Administrator
Joined: Nov 1998
Posts: 71,094
From: Hell was full so they sent me to NJ
Re: how hard is it to wire water temp and oil press. guages on the a pillar
Originally posted by red96z
they are electrical any tips
they are electrical any tips
For the water temp, you need to add the sensor also. You can't just splice into one of the two existing sensors. One available spot is the plugged hole on the passenger side head that corresponds to the simlar hole, used for the stock water temp sensor on the driver's side head. Hard to get at (between #6 and #8), depending on the exhaust system you have. I added an extra coolant temp sensor by splicing a 1/8" NPT "tee" into the rubber portion of the line from the back of the heads.
Once you have the sensor in, its a single wire to each of the gauges, a good ground for each gauge to complete the electronic circuit, and a +12V source for the light in each gauge, and another ground for each light. Find a good metal grounded screw under the dash, and run a single, heavy gauge ground wire to the a-pillar, and connect the 4 grounds form the gauges to it. You can get +12V from the headlight switch if you want a constant light level, only when the lights are on, or connect it to the output of the dimmer rheostat if you want the gauge lights to dim with the dash lights. My Formula doesn't have fog lights, so there was an extra connector hanging off the headlight switch that I was able to plug into.
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Registered User
Joined: Jul 2001
Posts: 626
From: memphis tennessee usa
Re: Re: how hard is it to wire water temp and oil press. guages on the a pillar
Originally posted by Injuneer
For both gauges, you need a place to locate the electronic sensors. Oil pressure can be mounted in the block, right above the oil filter. There is a 1/8" NPT hole, with a pipe plug in it on all years except the 93's.... that's where the stock oil pressure sensor is on the 93. You may need a bushing, depending on the threads on the sensor.
For the water temp, you need to add the sensor also. You can't just splice into one of the two existing sensors. One available spot is the plugged hole on the passenger side head that corresponds to the simlar hole, used for the stock water temp sensor on the driver's side head. Hard to get at (between #6 and #8), depending on the exhaust system you have. I added an extra coolant temp sensor by splicing a 1/8" NPT "tee" into the rubber portion of the line from the back of the heads.
Once you have the sensor in, its a single wire to each of the gauges, a good ground for each gauge to complete the electronic circuit, and a +12V source for the light in each gauge, and another ground for each light. Find a good metal grounded screw under the dash, and run a single, heavy gauge ground wire to the a-pillar, and connect the 4 grounds form the gauges to it. You can get +12V from the headlight switch if you want a constant light level, only when the lights are on, or connect it to the output of the dimmer rheostat if you want the gauge lights to dim with the dash lights. My Formula doesn't have fog lights, so there was an extra connector hanging off the headlight switch that I was able to plug into.
For both gauges, you need a place to locate the electronic sensors. Oil pressure can be mounted in the block, right above the oil filter. There is a 1/8" NPT hole, with a pipe plug in it on all years except the 93's.... that's where the stock oil pressure sensor is on the 93. You may need a bushing, depending on the threads on the sensor.
For the water temp, you need to add the sensor also. You can't just splice into one of the two existing sensors. One available spot is the plugged hole on the passenger side head that corresponds to the simlar hole, used for the stock water temp sensor on the driver's side head. Hard to get at (between #6 and #8), depending on the exhaust system you have. I added an extra coolant temp sensor by splicing a 1/8" NPT "tee" into the rubber portion of the line from the back of the heads.
Once you have the sensor in, its a single wire to each of the gauges, a good ground for each gauge to complete the electronic circuit, and a +12V source for the light in each gauge, and another ground for each light. Find a good metal grounded screw under the dash, and run a single, heavy gauge ground wire to the a-pillar, and connect the 4 grounds form the gauges to it. You can get +12V from the headlight switch if you want a constant light level, only when the lights are on, or connect it to the output of the dimmer rheostat if you want the gauge lights to dim with the dash lights. My Formula doesn't have fog lights, so there was an extra connector hanging off the headlight switch that I was able to plug into.
Administrator
Joined: Nov 1998
Posts: 71,094
From: Hell was full so they sent me to NJ
I have a mechanical oil pressure gauge in one of the center A/C vents, connected to the same port on the block. Running the braided S/S hose into the middle of the Formula dash wasn't real easy.....
I don't have a coolant temp gauge, but I have electronic oil temp and trans temp gauges in the A-pillar, and they are hooked up pretty much the way I described. A little dog work, but not too bad.
I don't have a coolant temp gauge, but I have electronic oil temp and trans temp gauges in the A-pillar, and they are hooked up pretty much the way I described. A little dog work, but not too bad.
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