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Classic/Antique Car Repair/68 bronco wiring probles with turn signals and head lights

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Expert: - 6/17/2009


Question
ok I'm stumped here. I had a dash fire recently been re wiring for weeks and all is good except cannot get my turn signals to work properly I am using a basic on off on as turn switch all wires go to proper locations but when i use them all indicators flash like emergency's are on, also when i step on the brakes all turn lights come on like all on brake cicuit cannot seem to get it right I'm sure wiring is correct badground need adifferent switch? also hi beams not working using generic 3 position switch to factory dimer lows work when i hit dimmer to hi beam only dash hi beam indicator light comes on all driving lights on but no headlights i know they were working before fire help?

Answer
The basic on off switches do not have internal wiring necessary to route the circuits to properly operate the units. The switches that control the directional have multiple contacts in them that when in different positions connect different wires and circuits. You cannot get this action from simple on off switches.
Brad

Classic/Antique Car Repair

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Brad Sears

Expertise

All automotive including antique and collectible. However if the car has been modified I can only answer in general terms and maybe get you pointed in the right direction.

Experience

Automotive tech instructor. Syndicated auto columnist 1970's though the early 1990's. Syndicated auto radio talk show, Ask Brad About cars, CBS Radio 70's through 90's TV Show "Last Chance Garage" 1980's PBS-TV syndicated. Auto instructor for the following companies: Fram Autolyte Holly Carter AMF Ford Motor University Of Conn Blue Hills Technical School Sugar River Technical Center Grew up in a family garage in Needham Mass and turned wrenches from the age of 14.

Publications
Manchester Union Leader, Nashua Telegraph, Motor Service Magazine, Yankee Magazine, Popular Mechanics (Saturday Mechanic early 80's), Los Angeles Times, New York Times, and lots more.

Education/Credentials
More than I care to remember. Basically Franklin Technical Institute in Boston, Northeastern University, Fitchburg State Teachers College, Tufts University, and a lot of factory schools along the way.

Awards and Honors
Moto Award winner. And much more.

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