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Re: Current draw killing battery(s)
The middle bussed electrical center is next to the parking brake pedal and there's one on each end of the dash.
The trailer brake controller should plug into the mid BEC and there are two trailer connections in the fuse relay block behind the LH battery.
I would check the trailer plug. I've had winter calcium slop make enough of an electrically conductive crud slurry in the trailer plug to drain the battery. I blasted it out with brakeclean and a nylon brush then hit it with battery protectant.
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1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8
RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
Last edited by hatzie; 04-06-2024 at 05:44 PM.
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