REQ: Headlight ON/OFF/Dimmer switch - Chevy Impala SS Forum
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post #1 of 16 (permalink) Old 08-05-2018, 11:51 AM Thread Starter
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REQ: Headlight ON/OFF/Dimmer switch

I thought I had the correct headlight ON/OFF & Dimmer thru RockAuto this week, but what I received isn't matching up. Take a look and see...





If you can get me a P/N I can find thru a reseller that would be great, otherwise I'll I'll make a trip to the junkyard while I got this in pieces today.

Thanks!

Clear Image Tri-Ys & Hi-Flow cats >> 2.5" X-Pipe & Magnaflow Tri-Chambers, Mike Harris 4L60E, Circle-D 2,400 RPM TC, All MOOG FT End & Del-A-Lum bushed MOOG CTRL Arms, Eibach FT & New Stock HT rear springs. Hotchkis Sway Bars & End Links, RAISS, 3.73 Gears in Eaton carrier, Dynoshaft & CIA Loop, BMR Trailing Arms, Braided Brake Hoses, Taylor Spiro-Pro Wires, AutoMeter Water Temp & Oil PSI Gauges, Impala Console. ATE Blue Brake Fluid. Skip White distributor. 20's, Z28 Cluster, Corbeau GTS Seat
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post #2 of 16 (permalink) Old 08-05-2018, 12:20 PM
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Quote:
I thought I had the correct headlight ON/OFF & Dimmer thru RockAuto this week, but what I received isn't matching up. Take a look and see...

Can you clarify what you want or what is wrong?


The dash switch comes in several forms: 9C1 USA, 9C1 Canada, base model(sedan/wagon) twilight sentinel USA, and twilight sentinel Canada (Daytime driving lights).


The high/low switch looks the same as the one I removed from my Caprice to install the Fleetwood flash to pass version. The only difference is the one you have has a extra piece of metal between the mounting slots. I am unsure what you think is wrong with it.

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post #3 of 16 (permalink) Old 08-05-2018, 12:32 PM
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Very unclear which part you want/need,and/or talking about...

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post #4 of 16 (permalink) Old 08-05-2018, 12:33 PM
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Junior, I'm sure you realize that's the dimmer switch that goes on the column. I looked all over and GM Partsgiant doesn't even list them any more. I found this though. https://www.ebay.com/itm/1994-1995-1...t+switch&rt=nc

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post #5 of 16 (permalink) Old 08-05-2018, 01:46 PM
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For reference 9C1 dash switch with trunk switch hole instead of change pocket.
Caprice high/low switch.(with shipping/alignment clip)

Mounted Impala high/low (looks like your new part)
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Last edited by Z09B4U; 08-05-2018 at 02:06 PM.
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post #6 of 16 (permalink) Old 08-05-2018, 03:14 PM Thread Starter
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Fellas,
Sorry for the lack of info. I was just getting real hot working outside today, and just posted up before I left for the junkyard.

I'm trying to fix the problem of the dash lights no longer illuminating unless the dimmer switch/interior is on.

I assumed the headlight switch and dimmer were a combination switch assembly like my '98 Tahoe. I was/am now planning on swapping parts/.

I just got back from the junkyard, and got the entire plastic assembly with the headlight switch, dimmer, and trunk switch.

Since I don't need the trunk and have that pocket area of mine already set up with an extra cigarette lighter/12 volt port, I'm going to swap parts over.

I'm not clear at the moment on how to release the headlight switch. There seem to be (4) tits and slotted plastic pieces holding it into the bezel. I can get all (4) tits released but the headlight switch doesn't come out easily.

Am I missing something, do I need to do something other than releasing those (4) catch points?

Thanks!

Clear Image Tri-Ys & Hi-Flow cats >> 2.5" X-Pipe & Magnaflow Tri-Chambers, Mike Harris 4L60E, Circle-D 2,400 RPM TC, All MOOG FT End & Del-A-Lum bushed MOOG CTRL Arms, Eibach FT & New Stock HT rear springs. Hotchkis Sway Bars & End Links, RAISS, 3.73 Gears in Eaton carrier, Dynoshaft & CIA Loop, BMR Trailing Arms, Braided Brake Hoses, Taylor Spiro-Pro Wires, AutoMeter Water Temp & Oil PSI Gauges, Impala Console. ATE Blue Brake Fluid. Skip White distributor. 20's, Z28 Cluster, Corbeau GTS Seat
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post #7 of 16 (permalink) Old 08-05-2018, 03:23 PM Thread Starter
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Disregard my last post, I figured it out.

I just needed to cool down for a few minutes, and think straight..

I'll post more once I finish up with things today, I appreciate y'all jumping on board with the help.

I wasn't anticipating the quick responses for a Sunday, so that's why I just decided to head out to the junkyard instead of waiting for some replies.

I got myself a headliner, which I'll write about in the 'What did you do....' thread later after I clean up around dinner time.

Clear Image Tri-Ys & Hi-Flow cats >> 2.5" X-Pipe & Magnaflow Tri-Chambers, Mike Harris 4L60E, Circle-D 2,400 RPM TC, All MOOG FT End & Del-A-Lum bushed MOOG CTRL Arms, Eibach FT & New Stock HT rear springs. Hotchkis Sway Bars & End Links, RAISS, 3.73 Gears in Eaton carrier, Dynoshaft & CIA Loop, BMR Trailing Arms, Braided Brake Hoses, Taylor Spiro-Pro Wires, AutoMeter Water Temp & Oil PSI Gauges, Impala Console. ATE Blue Brake Fluid. Skip White distributor. 20's, Z28 Cluster, Corbeau GTS Seat
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post #8 of 16 (permalink) Old 08-05-2018, 04:14 PM
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Quote:
I assumed the headlight switch and dimmer were a combination switch assembly like my '98 Tahoe. I was/am now planning on swapping parts/.
juniorwatson


Do you know that the instrument lights are controlled by the the "panel lamps dimming module"(power transistor) under the dash?



The dimming control/dome switch sends a signal to the "panel lamps dimming module" The parts you are changing may not be the fix.

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post #9 of 16 (permalink) Old 08-09-2018, 10:09 AM
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"panel lamps dimming module"(power transistor) Marked in red.
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post #10 of 16 (permalink) Old 08-09-2018, 10:26 AM Thread Starter
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Quote:
Originally Posted by Z09B4U View Post
"panel lamps dimming module"(power transistor) Marked in red.
I gotcha, sorry been busy and didn't get to reply right away. I just took a wild stab at things, as I previously wrote, since I had to remove the lower dash section anyway to diagnose a broken parking cable.

I'll head back to the J/Y Saturday and grab that item before they send the car to the crusher, since she's been picked over pretty good.

Thanks!

Clear Image Tri-Ys & Hi-Flow cats >> 2.5" X-Pipe & Magnaflow Tri-Chambers, Mike Harris 4L60E, Circle-D 2,400 RPM TC, All MOOG FT End & Del-A-Lum bushed MOOG CTRL Arms, Eibach FT & New Stock HT rear springs. Hotchkis Sway Bars & End Links, RAISS, 3.73 Gears in Eaton carrier, Dynoshaft & CIA Loop, BMR Trailing Arms, Braided Brake Hoses, Taylor Spiro-Pro Wires, AutoMeter Water Temp & Oil PSI Gauges, Impala Console. ATE Blue Brake Fluid. Skip White distributor. 20's, Z28 Cluster, Corbeau GTS Seat
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