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Classic Mustangs Tech Forum

Technical discussions specific to 1964-1967, 1968-1970, and 1971-1973 Classic Mustang. Discuss all tech related to in-line six cylinder and V8 powered Vintage Mustangs here.

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Unread 03-22-2010   #16 (permalink)
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The wiring makes an L from the firewall down the drivers side and across the front to both headlamps. It really could not be switched around. Most likely with old wiring you either have bad/loose/corroded connections or some wiring is split or missing insulation.

You can pull the connectors off and spray brake cleaner into them to clean them really well then make sure they are good and dry. Buy some di-electric grease from any auto parts store and put some in each of the connector holes then plug it back in after checking to make sure none of the connectors are bent or broken. That should help with your dim lights unless one of the bulbs is just worn out which did happen with those old glass single beam lights. Try swapping the headlamp bulbs and see if the same one stays dim then you will know. It is a cheap and easy way to give you safer and more reliable connections as it also waterproofs them.
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Unread 03-22-2010   #17 (permalink)
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Quote:
Originally Posted by Icerat View Post
The wiring makes an L from the firewall down the drivers side and across the front to both headlamps. It really could not be switched around. Most likely with old wiring you either have bad/loose/corroded connections or some wiring is split or missing insulation.

You can pull the connectors off and spray brake cleaner into them to clean them really well then make sure they are good and dry. Buy some di-electric grease from any auto parts store and put some in each of the connector holes then plug it back in after checking to make sure none of the connectors are bent or broken. That should help with your dim lights unless one of the bulbs is just worn out which did happen with those old glass single beam lights. Try swapping the headlamp bulbs and see if the same one stays dim then you will know. It is a cheap and easy way to give you safer and more reliable connections as it also waterproofs them.
The connector that was in the car was bad, one of the plugs was broken off, we paired the wires up exactly as the connector had them but individually without the connector. Is there any place where you can buy the connector for these wires? Also the fusebox is probably the original one, can we get a new one of these?
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Unread 03-22-2010   #18 (permalink)
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I do not believe the connectors are available seperate but could be wrong. The fuse box really doesn't "wear out" but if it is corroded or has broken wires to it should be replaced. The wiring harnesses are available in sections made just like factory for just under $100 typically. It is a good investment in safety and longevity.
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Unread 03-22-2010   #19 (permalink)
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Thanks for all the help Icerat, and everybody else.
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