I believe this could be a great help. I'm learning my way around my truck, and have bought the service manual. I've immediately found some things in the manual that need further clarification, particularly to a newbie like me. For example, in the wiring section, at page 8w-10-3, I saw the heading "CAV" above a column. I could find no explanation in the shop manual. Could this be "Circuit Access Value", or similar strange thing? No, after asking a few people, and getting no answer, I got the answer "cavity" from a Google search on the Web. More of a problem was my attempt to trace the source of an Ignition-Off Draw (IOD) of 400 ma instead of the maximum of 25 ma after waiting 3 minutes, as stated in the manual at pages 8A-10 and 11. This was in connection with a flat battery problem, which eventually turned out to be a defective battery, even though the dealer "tested" it and said it was good, and would not be replaced under warranty. (He has now changed his mind, when the leaking acid ran over his counter!) I found the IOD reduced to zero when the IOD fuse (12) was removed, so I went to page 8w-12-12, and attempted to isaolate one by one the 14 items supplied by this IOD fuse. Eventually, by disconnecting the loom under the driver's seat, I found the drain to be from the Seatbelt Control Module. I then went to page 8M-13, to read and understand the Seatbelt Control Timer Module (SCTM). I read at page 8M-14 that the retractor latch solenoids are only de-energised after 30 minutes!! I repeated the IOD test, with the doors closed, and waited 30 minutes, at which time the IOD reduced to zero! The truck is perfect, but the IOD test page says 3 minutes. I wasted a morning on this. If we had a thread or forum called "98 Service Manual Notes" or similar, any person buying a manual could run through all the posts, make notes on the pages of things of interest, and perhaps save a lot of aggravation and time. There is a huge amount of knowledge amongst you all, and sharing it in this way might prevent newbies like me repeating errors that have already been detected by others. If the idea is not generally supported, I'll just post the above IOD comment as an isolated thread. Nick.