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#1 Old 07-06-2010, 02:53 PM
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Dashboard lights

My dashboard lights dont light up when i turn on my headlights. I'm not sure what could cause this. the rheostat knob has been swept and it doesnt do anything. ive gotten like 2 warnings for speeding because i couldnt see the speed. any help would be appreciated.

1995 Toyota T100 SR5 4WD 5 speed 5VZ-FE Custom exhaust
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#2 Old 07-06-2010, 03:03 PM
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Did you check yer fuses...in particular the 10A Gauges fuse?



If the fuses check good...you'll need to check fer power to the dimmer switch before and after.

1998 T-100 SR5 2WD auto, Roadmaster Active suspension, oil catch jar, AC mod, aero cap, lower aero package, 67% grill block
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#3 Old 07-06-2010, 03:08 PM
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how do i check the dimmer switch for power, like do you have a diagram of which two terminals i should check?

1995 Toyota T100 SR5 4WD 5 speed 5VZ-FE Custom exhaust
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#4 Old 07-06-2010, 04:41 PM
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how do i check the dimmer switch for power, like do you have a diagram of which two terminals i should check?
If you have physically and electrically checked the fuse, then pull the plug that goes to the dimmer. Use yer multimeter on the plug one wire at a time. Put the other probe to ground. You should see 12V on one of the wires. I'd look it up on my electrical wiring diagram but I'm in the middle of redoing my air ducting.

If you don't see 12V...you'll need to check those fuses again.

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#5 Old 07-16-2010, 02:06 PM
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okay, so i do have full power to the dimmer switch, i checked the resistance while rotating the knob, and it read a constant 18M-ohms so i think it's safe to say i need a new dimmer switch. is this correct?

1995 Toyota T100 SR5 4WD 5 speed 5VZ-FE Custom exhaust
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#6 Old 07-16-2010, 02:11 PM
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Originally Posted by jjk029 View Post
okay, so i do have full power to the dimmer switch, i checked the resistance while rotating the knob, and it read a constant 18M-ohms so i think it's safe to say i need a new dimmer switch. is this correct?
Yup...

You should be able to use one from a 4Runner as well...

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#7 Old 07-16-2010, 02:18 PM
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Talking

Looking up the part on www.toyodiy.com the part number is 84119-32090.

Looking up that part number on www.toyotapartsales.com I came up with this...and you can see what vehicle you can git the same dimmer rheostat from (parts yard near you).

Mechanical Catalog
Item Number MSRP Core Price Price
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, camry, w/o digital 1991
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, corolla, sedan, wagon, jpp 1991 - 1992
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, corolla, sedan, wagon, usa 1991 - 1992
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, celica, w/digital speedo 1989
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, pick-up 1992 - 1994
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, 4-runner 1992 - 1994
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, t100, auto trans 1993 - 1994
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, camry, w/o digital speedo 1989 - 1990
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, corolla, jpp 1989 - 1990
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, corolla, usa 1990
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, pick-up 1995
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, 4-runner 1995 - 2002
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, t100, manual trans, w/tachometer, w/power pkg. 1997 - 1998
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, t100, auto trans 1995 - 1998
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, tacoma, manual trans, w/tachometer, w/sr5 1995 - 2000
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, tacoma, manual trans, w/tachometer, all 2001 - 2004
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, tacoma, auto trans 1995 - 2000
Add to Cart Contact Us
8411932090 $129.21 $0.00 $93.22
Electrical - Chassis electrical - Switches - Instrument light rheostat
Instrument light rheostat, tundra 2000 - 2006
Add to Cart Contact Us

1998 T-100 SR5 2WD auto, Roadmaster Active suspension, oil catch jar, AC mod, aero cap, lower aero package, 67% grill block
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#8 Old 07-16-2010, 10:50 PM
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wow, that part is expensive! is there i could possibly fab one with a rheostat from radioshack or does anyone on here possibly have an extra one i could have?

1995 Toyota T100 SR5 4WD 5 speed 5VZ-FE Custom exhaust
55w Bi-xenon h4 Hids
LT235/85/16 General Ameritrac (?)
BMW 535i heated leather bucket seats
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#9 Old 07-16-2010, 11:03 PM
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wow, that part is expensive! is there i could possibly fab one with a rheostat from radioshack or does anyone on here possibly have an extra one i could have?
Yer best bet is to just raid a local parts yard. You could probably walk out of there fer less than $10 fer that part.

I listed all the other vehicles so you know which ones to raid...

1998 T-100 SR5 2WD auto, Roadmaster Active suspension, oil catch jar, AC mod, aero cap, lower aero package, 67% grill block
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#10 Old 07-16-2010, 11:27 PM
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Quote:
Originally Posted by jjk029 View Post
okay, so i do have full power to the dimmer switch, i checked the resistance while rotating the knob, and it read a constant 18M-ohms so i think it's safe to say i need a new dimmer switch. is this correct?
Not likely. The dimmer rheostat rarely fails.

You say "My dashboard lights dont light up when i turn on my headlights"
but how about the back lights for the radio and HVAC controls, etc, do they work?
If so, probably not the dimmer rheostat. If it's confined to the gauge cluster it's more likely a bad ground to it. Just something to check out.

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#11 Old 07-17-2010, 08:37 PM
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i just checked, and my HVAC doesn't light up, but my aftermarket radio and amp do, if that constitutes to anything. i'll probably head to a salvage yard sometime within the week, and if anyone in the baltimore area is heading there, haha, let me know! :p

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#12 Old 07-18-2010, 04:13 AM
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i just checked, and my HVAC doesn't light up, but my aftermarket radio and amp do, if that constitutes to anything. i'll probably head to a salvage yard sometime within the week, and if anyone in the baltimore area is heading there, haha, let me know! :p
You can pull the HVAC switch out with yer finger tips. Just swap it out with one from the yard...

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#13 Old 07-20-2010, 07:25 PM
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did you mean the a/c switch Bam?

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#14 Old 07-20-2010, 08:08 PM
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did you mean the a/c switch Bam?
Yes...I did. Try it. You can pull it out with yer fingertip/fingernails.

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#15 Old 07-20-2010, 08:17 PM
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haha my a/c switch works perfectly! , but a lack of freon is the culprit for that :p. tomorrow around noonish i should be at crazy ray's on rt40 away from the city :p

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