Thanx for the suggestion.
Ah, Del City...
Used to order a lot of wire through them...
Del City's description does not mention manufacturer or country of origin.
Wish the product zoom pics were a little better to make out the label easier, but it looks like the off-shore, Asian, off-brand stuff.
Parts Express pricing is close, and at least Parts Express tells you where the units are coming from.
Parts Express (pricing per unit, additional discount for bulk)
"Bosch type" 12VDC 30A / 40A $2.09
http://www.parts-express.com/pe/show...number=330-073
Tyco (formerly Bosch) 12VDC 20A / 30A $4.49
http://www.parts-express.com/pe/show...number=330-070
NTE 12VDC 50A $7.25
http://www.parts-express.com/pe/show...number=075-138
NTE 12VDC 70A $7.88
http://www.parts-express.com/pe/show...number=075-140
Del City
"Change Over Relay" 12V 30A / 50A $3.08 (pricing per unit, price break @ 100+ units)
http://www.delcity.net/store/Relay-!...et/p_73576.a_1
"Relay Kit" 12V 70A (includes 2x 0.250" + 2x 0.375" connectors) $5.98
http://www.delcity.net/store/Normall...y/p_791796.a_1
Checking eBay, the prices are in the ball park.
Off-shore, Asian, off-brand stuff starts at around $2 per unit.
Tyco 20A / 30A units are around $5 per unit.
-Ted