I'm a first-time poster and primarily a British car guy. Thanks in advance for any help you can provide.
My old truck is showing some flaky electrical symptoms. I'm also getting ready to install a fourth fuel pump (over 160K miles) to correct the fuel level sensor problem, and would appreciate any advice on a long-term fix.
First issue was that backlighting on headlamp/dimmer switch wasn't working. I pulled the switch, tested the lamp (good), and put the lamp back in. The backlighting would work only if I operated the rotary switch a few times. Also, the dimmer portion backlighting never worked. Decided to replace the switch - Backlighting on main portion of switch now works consistently, but dimmer still doesn't light. Both original and replacement switches work fine otherwise, by the way.
Second possibly related trouble - None of the backlighting on any of the left door switches works. The courtesy lamp on bottom door corner does. I've seen several drawings on the web, but not sure which are relevant. Don't see a fuse marking in the panel on left side of dash that looks obviously related.
I have searched forum and have seen similar issues, but not quite this. Any ideas?
Thanks,
Bruce