It's a good idea to always use relays for high amp draw items, source the power for them from a distribution point that doesn't go through the bulkhead connectors on the firewall, and is directly fed from a fused main alternator circuit. This page helped me a lot when it comes to relays. http://www.classictruckshop.com/clubs/earlyburbs/projects/bosch/relay.htm
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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