05-18-2006, 10:12 AM
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#3
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AF Regular
Join Date: Jul 2005
Location: Roselle, Illinois
Posts: 168
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Re: trailer wiring on a 97 blazer
Not sure what you are asking, but you need all 4 wires in order to have all the lights working on the trailer. The previous owner hooked up the harness on my truck, but doesn't work right. The truck might need something special, such as, a relay or some sort of switching device.
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1998 Blazer 4WD 4.3L 118,000miles 4dr
 Repairs
--rear main seal, u/l ball joints, pitman/idler arms, i/o tie rod ends, control arm bushings, motor/trans mounts, oil relocation lines, door pin bushings, water pump, ring/pinion.
--Bad ABS ground, loose connection blower motor, repaired pulse board.
 Mods/upgrades
-Throttle plate mod.
1999 Ford Windstar SE 3.8L 160,000miles
Repairs
--P171/P174 procedure, loaded control arms, tie rod ends, shocks, struts, springs.
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