Join Date: Jan 2012
Location: Mills County, Texas
The switch has two breakers: One does the tail, courtesy, parking lights & horn, the second does the headlamps.
67-68 Mustang is 15A/12A (two headlamps)
67-68 Cougar is 15A/18A (four headlamps)
69-70 models (Mustang & Cougar) is 15A/18A.
The wiring is 16 gauge, which is rated to 22A when used as automotive chassis wiring.
I am not a fan of using higher rated switches to solve a problem. The Circuit Breaker is tripping for a reason.
If it's because it's old and worn, replacing it with an good original replacement switch will solve the problem.
If it's tripping due to load with all stock components (lamps) then clean each connection and check your wiring for shorts. Also check the dimmer switch on the floor - it is notorious for going bad.
If it's tripping due to load (halogen or other lamps), install relays with a separate breaker to handle the power requirements.
No matter the reason, installing relays is always a good idea.
Also - note that the Cougar switch has the vacuum actuator attached to it.
Contact and business info removed to comply with new management ad rules.
Last edited by TheRktmn; 05-08-2014 at 10:12 AM.
Reason: Added dual ratings for different years & models