Re: glow plug relay / battery problem
Your door pins that control the interior lights are grounding out or the wiring that runs along the driver side to the rear doors is corroded and is shorting to ground for the rear door pins(pretty common on crew cabs). As for the relay, it is bad. Replace it.
97 F-350 XLT CC DRW 4X4 PSD, 285/75-16 Custom bumpers, Gauges-boost/egt/trans, Swamps IDM, 3.5"dp- 4" exh., 3" Body lift, ES bushings/mounts, Built trans, billet conv, B&M pan, Hayden cooler, Adrenaline, stage 2's, IC, H2E, E-fuel
ARP's, 910's, Smith Bros. to come