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Post by Shane on Sept 4, 2017 14:44:35 GMT
Any idea why the main beam dash bulb in the cluster is very very dim, it works, but it is not visible when the car is outside in the daylight it has to be dark and even then you can only just about see it if you look hard.
Tried different bulb and bulb holder
Thought it may be a dodgy earth but then i realised all the other bulbs in the cluster are very bright and they all share the same earth (BLACK wire) from the middle connector I believe.
I have also checked the resistance between the earth on the chassis and where the bulb makes contact on the PCB back of cluster and it was fine, so im confident its not a ground issue.
Thanks
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Post by gwnwar on Sept 4, 2017 16:39:47 GMT
All the bulbs in the cluster are the same size/number.. You might check the current in the wire to the cluster from the headlamps.
Also the surface of the board and socket for the bulb..
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Post by Shane on Sept 4, 2017 16:49:40 GMT
All the bulbs in the cluster are the same size/number.. You might check the current in the wire to the cluster from the headlamps. Also the surface of the board and socket for the bulb.. I just tested the current by setting the multimeter to 10A. I removed the connector on the cluster then touched one probe to the live wire and then i touched the other probe to the ground on the PCB just after the bulb and I got a reading of 3.70 when the main beam was switched on. Is that low? |
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Post by gwnwar on Sept 4, 2017 17:58:40 GMT
battery power same as from head light wire it is spliced into. I believe it is the R/Y wire at the head lamp.. It may change color before it goes to cluster. Just trace it back from bulb socket on board to connector..Seems like 2 different bodies were used in '98
pop up lights and on bumper units so 2 different wire layouts and colors. Na style used 3.4W bulb and NB style 1.4 bulb.
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Post by Shane on Sept 4, 2017 18:04:00 GMT
gwnwar I just tested the current by setting the multimeter to 10A. I removed the connector on the cluster then touched one probe to the live wire and then i touched the other probe to the ground on the PCB just after the bulb and I got a reading of 3.70 when the main beam was switched on. Is that low?
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Post by gwnwar on Sept 4, 2017 18:11:00 GMT
what was your volt reading (DC)use 20 scale if you have it just more then 12V DC
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Post by Shane on Sept 4, 2017 18:20:13 GMT
what was your volt reading (DC)use 20 scale if you have it just more then 12V DC Just set the multimeter to volts on 20 scale and got 5.8 |
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Post by gwnwar on Sept 4, 2017 18:37:04 GMT
I believe your wiring is same as '99 USA cars. if so is it a Red wire at the cluster connection or what color..
What V do you have at the head lamp R wire after it passes through the bulb on..
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Post by Shane on Sept 4, 2017 18:41:16 GMT
I believe your wiring is same as '99 USA cars. if so is it a Red wire at the cluster connection or what color.. What V do you have at the head lamp R wire after it passes through the bulb on.. It is a red wire, I will go check now  thanks alot for the help, be right back |
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Post by Shane on Sept 4, 2017 18:48:07 GMT
I believe your wiring is same as '99 USA cars. if so is it a Red wire at the cluster connection or what color.. What V do you have at the head lamp R wire after it passes through the bulb on.. 11.3 before it passes through the headlight then 10 just after it passes through the headlight |
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Post by Shane on Sept 4, 2017 18:54:16 GMT
To clarify when i tested the volts at the back of the cluster i tested either side of the main beam bulb as seen below, the multimeter was set to volts on the 20 Scale and the reading was 5.8. Does that mean there are 5.8 Volts going through the bulb? Is that low?  |
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Post by Shane on Sept 5, 2017 14:56:17 GMT
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Post by gwnwar on Sept 5, 2017 19:25:39 GMT
-Just got back on computer.. Went to a holiday party yesterday and night..I would think that is voltage through bulb..
Really have not had this problem so winging it.. You have a good ground at the bulb socket.with 5.8V
What is the V at the connector with it unplugged from cluster..
If battery is full charged.. You should have battery voltage to the head lamp is yours a R/Y wire to left and G wire to right.. Each go through a 15A fuse in inside box.
High Beam bulb runs off left head lamp R wire..
The Black wire out of the cluster connector is good to ground right OHM reading 0.00
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Post by Shane on Sept 5, 2017 20:10:52 GMT
Thanks gwnwar , sorry to keep bugging you but you are my last hope by the looks of it I get 0.03 ohms from the black wire out the cluster, not 0.00 but i dont get 0.00 any where on the chassis. I checked the voltage on the battery with the car off and it was reading 12.5V so again seems ok. Is there a simple work around like change the bulb to LED? Would running a wire directly from the RED wire at the left headlamp to the RED wire on the cluster connector introduce more voltage? Is there another way of introducing more voltage? I will check the voltage to the connector when i can get to the car tomorrow. Thanks |
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Post by gwnwar on Sept 5, 2017 22:42:26 GMT
Shane.. You are not bugging me.. I would take the bulb and socket out of the cluster and put batt V to it. If it takes it OK.. good..
Trace the foil track on the board from connector to bulb to see if it is a clear run and not into anything that would drop the voltage.. Running a new wire might be the answer.. you could try it.. Before you do check the V at the connector on cluster..
How close are you to getting the car on the road..
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thanks alot for the help, be right back