Are you looking for a headlight motor relay for your 70-72 Charger?

[bohog]

http://cgi.ebay.com/ebaymotors/OEM-SPDT-Relay-Harness-12VDC-30-40-AMP-Bosch-Style_W0QQcmdZViewItemQQcategoryZ46098QQitemZ8026836469QQrdZ1

This is an aftermarket relay that could easlly be made to work on 70-72 Chargers. I've used this style relay in my 71 R/T, and it works just fine. This isn't a plug for the seller, this is the cheapest I've seen these relays sell for.
I know this topic should be in the Ebay section, but not everybody looks there.
If your going to use this style relay, be sure to add a fuse holder to the power lead to the motor. As the factory relay had a circuit breaker mounted on the relay.

[nascarxx29]

Ya, I here good things about this place for '70 Charger headlight relay parts.

Digi-key.com Part #Z984-ND Relay power SPDT W/ 20 amp bracket

1-800-344-4539 701 Brooks Ave. South
Theif River Falls Mn. 56701-0677