Volvo RWD Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 9/2003

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

OBD Display Bulb

posted by  Chris Mullet on  Thu Jun 14 04:46 CST 2007
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 09:08 CST 2014
[RELATED]

1990 740 NA OBD I

I've dertermined the little red bub in the OBD reader is burned out - no continuity through it. The little resistor in series with it DOES have continuity, reading "about" 260 ohms (on an old analog meter).

Does anyone know if I can just go into Radio Shack and get a bulb to replace it? If so, what do I ask for? (I'm no electronics geek.)

Can I safely solder the new one in without frying the resistor? Obviously someone did before.

FYI - I'm getting 12vdc up the blue wire to the reader and the black wire shows good continuity to ground, so I'm banking that everything else is OK.






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New OBD Display Bulb
posted by  Chris Mullet subscriber  on Thu Jun 14 04:46 CST 2007 >


<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.