hey everyone, recently I've decided to acquire a coolant temp gauge and tried wiring it to the ignition switch. its for a 2003 K12 Micra, 1.2 65hp manual trans. I've tried to find any pinouts or somewhat understandable wiring diagrams and the only one I've found is really confusing. I need help with wiring it or at least a decent diagram that is readable to a normal human. I found one diagram but its really confusing and kinda has no corelation with whatever my multimeter says
wiring a coolant temp gauge
- Thread starter Kajet05
- Start date
Mika The Finn
Site Supporter
G'day,
I also been thinking to install coolant temp gauge to my 'big block' Micra.
Got idea of similar to this from here, sort of no wiring required!
Smart OBD2 HUD Gauge Car Digital Speedometer Display Tool Water Temp Plug Play
-Mika-
I also been thinking to install coolant temp gauge to my 'big block' Micra.
Got idea of similar to this from here, sort of no wiring required!
Smart OBD2 HUD Gauge Car Digital Speedometer Display Tool Water Temp Plug Play-Mika-
OP
OP
tried the same one and few others, for some magical reason none of them did work unfortunatelyG'day,
I also been thinking to install coolant temp gauge to my 'big block' Micra.
Got idea of similar to this from here, sort of no wiring required!
-Mika-
Mika The Finn
Site Supporter
Bummer, good to know.
Hi there,
I had a problem with my coolant light on my dash so decided to use a OBD2 readout unit, these units plug in to the OBD unit under the dash.
I have had no problems from the multiple readouts this has provided. These units should work out of the box, other wise you may have a wiring problem with the cars OBD unit !?
I had a problem with my coolant light on my dash so decided to use a OBD2 readout unit, these units plug in to the OBD unit under the dash.
I have had no problems from the multiple readouts this has provided. These units should work out of the box, other wise you may have a wiring problem with the cars OBD unit !?
HUD P10 OBD2+GPS Gauge Head Up Car Digital Display Speedometer Alarm Temperature | eBay UK
OBD2 Engine Diagnostic Functions OBD2 Function. This device based on OBD2 protocols, but it can not support J1850(J1850 PWM, J1850 VPM) ! OBD2 device are not compatible with follow vehicles 1 x HUD Heads Up Display.
www.ebay.co.uk
OP
OP
well, my trusted mechanic didn't find any problem with obd port wiring, so it could be just the fact that most of these obd2 gauges dont work on my 2003 micra but could work on a later, after facelift models (read that they did in fact had different obd2 protocol). now my problem is that I tried wiring the gauge and turns out the gauge itself is for a single pin grounded temp sensor and not for a two pin temp sensor, which I have. gonna buy a adapter for the coolant pipe and then wire it back, hopefully it will then work.Hi there,
I had a problem with my coolant light on my dash so decided to use a OBD2 readout unit, these units plug in to the OBD unit under the dash.
I have had no problems from the multiple readouts this has provided. These units should work out of the box, other wise you may have a wiring problem with the cars OBD unit !?
HUD P10 OBD2+GPS Gauge Head Up Car Digital Display Speedometer Alarm Temperature | eBay UK
OBD2 Engine Diagnostic Functions OBD2 Function. This device based on OBD2 protocols, but it can not support J1850(J1850 PWM, J1850 VPM) ! OBD2 device are not compatible with follow vehicles 1 x HUD Heads Up Display.www.ebay.co.uk
Plus, I don't like the look of these obd readers, and the chunky cable is pretty much impossible to hide anywhere
OP
OP
Update on the gauge:
I bought an adapter that goes on the coolant pipe going to the radiator. the readings are around 8-5C* lower and tends to start showing actual temps after a longer while since its between the inlet on the radiator and the thermostat, but at least I know approximate temperature. now the gauge is on the A pillar in a nice holder. and here's few photos:
PS: the adapter needs to be attached to the cut-in-the-middle cooland pipe, strongly suggest squeezing a cut 5liter empty bottle after either coolant or wiper fluid so its easier to catch most if not all of the coolant from the pipe while its being cut in half
I bought an adapter that goes on the coolant pipe going to the radiator. the readings are around 8-5C* lower and tends to start showing actual temps after a longer while since its between the inlet on the radiator and the thermostat, but at least I know approximate temperature. now the gauge is on the A pillar in a nice holder. and here's few photos:
PS: the adapter needs to be attached to the cut-in-the-middle cooland pipe, strongly suggest squeezing a cut 5liter empty bottle after either coolant or wiper fluid so its easier to catch most if not all of the coolant from the pipe while its being cut in half
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You have done well with the kit, the K12 Micra went wrong with the idiot lights ( blue when cold and red when overheating) regardless of models it should have had a temperature gauge fitted as standard, however for us left with these Gems it is up to us all to find ways to keep these cars updated and on the roads.
