S-10 Forum banner
1 - 3 of 3 Posts

·
Registered
Joined
·
1 Posts
Discussion Starter · #1 ·
1998 S-10
I have no HBs.
High beam switch does click, but no HBs and no blue indicator on the dash.

What fuses or relay should I be checking?

Thanks in advance!
 

·
Registered
99 Blazer
Joined
·
294 Posts
You can see on the diagram below that the two fuses under the hood (LT HDLP 10amp and RT HDLP 10amp) supply power to the headlights, however they can't be the problem if your low beams still work. The headlight circuit in these trucks is actually somewhat complex. You can try swapping out the headlight power relay, the headlight ground relay, and the DRL relay with other same relays in the box. However, there is a chance that you have a problem with your body control module. It's difficult to explain testing of this circuit over the internet. Do you have 12V electrical experience?
Font Parallel Pattern Engineering Diagram
 
1 - 3 of 3 Posts
Top