Marker lights

[Jim Brzozowski]

Roof top clearance lights sometimes don't shine for a week or two then for no reason they're back on. Dealer once told me it was a bad ground. OK, does anyone know where the ground wire is and where it connects. Hate to take time off to go to the dealer just to fix lights that don't seem to stay fixed. Any other fixes for intermittent marker light operation.

[Modified]

Power is supplied from INT PRK Fuse 10A, located in Fuse Block-Left I/P. This leaves with BRN Wire routed to Fuse Block-Right I/P, pin B11 of connector C1. The BRN Wire leaves Fuse Block-Right I/P at pin B of Connector C^. All three lamps are wired hot. The common ground for the Base Crew Cab and Uplevels is G200, located on passenger side of dash.

[Inspector]

Wow, What did he just say?