Join Date: Apr 2005
Location: Guilford, CT, USA
No don't pull the gas tank just yet. Looking at the schematic for 2001-on instrument panels (and keep in mind that schematics always confuse me), it looks like there are two wiring harnesses/connectors to the panel. (I'm going to try to think this through in this post, so bear with me and check my reasoning.) One of the connectors has the circuits for the LCD/gear selector readout, coolant temp gauge, tach, speedo, and fuel gauge. The other has the circuits for the panel lights, including cruise indicator light, neutral, reverse, ABS, fuel warning light, oil light, low battery charge condition, high coolant temp, high beam, and right and left turn signals. So the first group is working, the second it not. There are only two overlaps that I see between the two wiring harness. One is that the lights that illuminate the speedo (you only see them on at night) use the same ground path as the high beam indicator light, and right and left turn signal indicator lights. So, fire up the beast, throw a blanket or something over the instrument panel and your head, and see if the speedo lights are on or off. Hit the left and right turn signal levers and see if their corresponding instrument panel indicator lights flash. Turn on the high beam and see if the corresponding indicator light comes on.
Condition: speedo lights come on, panel lights for turn signals and hi beam do not come on.
Conclusion: ground path for instrument cluster lights is OK at least through the connector.
Condition: speedo lights do NOT come on, panel lights for turn signals and hi beam do not come on.
Conclusion: ground path for instrument cluster lights is cut/shorted. It cannot be on the positive side of the curcuit because each of the "test" lights gets it power via different paths.
If there is no good ground path it seems likely that the problem is a loose connection at the connector or in the path back from the connector to the battery ground. If the speedo lights come on I'm not sure what the issue is. It's not the fuse, since the LCD and gauges work. Any other ideas out there?
'99 Canyon Red K1200 LT - Buddah Bike
Last edited by was; Aug 9th, 2007 at 12:01 pm.