Quote:
Originally Posted by HO455
Was your truck a fleet or commercial truck? The SPID should indicate a larger alternator. Like K76 or K81?
The truck I parted that had those terminal blocks was a ex-Weyerhaeuser fire response Suburban. The factory provided those terminal blocks for fleet or commercial customers to hook up their aftermarket accessories for correct voltage sensing by the charging system.
I have been unable to find any kind of wiring diagram that shows the extra wiring for these larger alternators.
If yours still has the original 61 amp style alternator it should look like the one below if it is a 67-68. I've only seen this set up on 68 and earlier trucks.
The wiring in your last post looks like what I've seen before in trucks that came from the factory with higher output alternators.
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It does have a k76 61 amp code on spid.. not sure what the truck was in its previous life