Re: 6 volt relays
Two relays are normally used. You do need to watch the polarity on some of these relays because of an internal relay. An issue would be that the power is still coming through the headlight switch and the objective of using relays is to provide a direct path from the battery to the lights bypassing the normal car wiring. The power would be coming through pin 30 (30 is power in and 87/87a are power out). One of the pair 85 & 86 would need to complete a circuit to switch the power. This is normally a power (trigger) source and a ground. If the headlight switch was to be used as the trigger source it would have to be on 85 or 86 and the power on 30. Battery power on 85/86 and the dimmer switch on 85/86 would be providing power to both sides at the same time.
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