850 dash light dimmer 9162467: fixable?
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850oldschool
- Posts: 392
- Joined: 19 Oct 2019, 13:21
- Year and Model: 1996 850 NA
- Location: Minneapolis, MN
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I've done some searching and found a couple of threads describing how to hotwire it so the dash lights are always on high. Has anybody ever repaired one to work as original?
- erikv11
- Posts: 11913
- Joined: 25 Jul 2009, 14:03
- Year and Model: 850, V70, S60R, XC70
- Location: Iowa
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I have not - always been a junkyard item for me 
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 201k
'07 XC70, black, 205k
'07 XC70, willow green, 223k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 201k
'07 XC70, black, 205k
'07 XC70, willow green, 223k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k
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850oldschool
- Posts: 392
- Joined: 19 Oct 2019, 13:21
- Year and Model: 1996 850 NA
- Location: Minneapolis, MN
- Been thanked: 45 times
Thanks! The jumper fix seems like it'll be fine.
- abscate
- MVS Moderator
- Posts: 36156
- Joined: 17 Feb 2013, 17:54
- Year and Model: 99: V70s S70s,05 V70
- Location: Port Jefferson Long Island NY
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+10,000 points for using a part number

Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread
- RickHaleParker
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The dimmer switch is pretty simple electronics. Replacing the Rheostat and/or the Power Transistor most likely will fit it better then 90% of the time. Heat destroys Power Transistors and physical wear and tear take it toll on Rheostats.
Active
1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2017 Ford PIU. 3.5l, Twin Turbo, 365 Hp.
............................
Past
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. ( Killed by a plastic radiator. )
2004 S60R, B8444S TF80 AWD. Yamaha V8 conversion ( I moved, the project did not )
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0. ( Transmission dead after sitting for a winter )
1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2017 Ford PIU. 3.5l, Twin Turbo, 365 Hp.
............................
Past
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. ( Killed by a plastic radiator. )
2004 S60R, B8444S TF80 AWD. Yamaha V8 conversion ( I moved, the project did not )
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0. ( Transmission dead after sitting for a winter )
- xanthefin
- Posts: 450
- Joined: 04 May 2019, 12:22
- Year and Model: 1997 850
- Location: Pluto
- Has thanked: 106 times
- Been thanked: 130 times

hmm...
Anyway first thought it was slider who was gone as when sliding it time to time blinks the lights. If anyone looking it is 150K slider and hard to find exactly due physical size of 17mm x 6.8mm and slide movement 12mm roughly but smaller fits surely.
This fix will take a moment.
- erikv11
- Posts: 11913
- Joined: 25 Jul 2009, 14:03
- Year and Model: 850, V70, S60R, XC70
- Location: Iowa
- Has thanked: 312 times
- Been thanked: 818 times
I'd send you a spare one from my stash but shipping to Pluto is a killer. Looks fun though, hope you get it sorted!
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 201k
'07 XC70, black, 205k
'07 XC70, willow green, 223k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 201k
'07 XC70, black, 205k
'07 XC70, willow green, 223k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k
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850oldschool
- Posts: 392
- Joined: 19 Oct 2019, 13:21
- Year and Model: 1996 850 NA
- Location: Minneapolis, MN
- Been thanked: 45 times
Holy sh*t, that’s complicated!
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850oldschool
- Posts: 392
- Joined: 19 Oct 2019, 13:21
- Year and Model: 1996 850 NA
- Location: Minneapolis, MN
- Been thanked: 45 times
- abscate
- MVS Moderator
- Posts: 36156
- Joined: 17 Feb 2013, 17:54
- Year and Model: 99: V70s S70s,05 V70
- Location: Port Jefferson Long Island NY
- Has thanked: 1611 times
- Been thanked: 4072 times
It’s been tough , even for United Planet Service, since Pluto was demotederikv11 wrote: 24 Feb 2021, 22:23 I'd send you a spare one from my stash but shipping to Pluto is a killer. Looks fun though, hope you get it sorted!
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread
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