Pete, If your car is a positive ground, Rimmer doesn’t have it. My roadster is Neg ground and I installed a 123, but when we went to order one for the DHC that is Pos ground, they don’t carry it. Don’t let anyone tell you that the same will work for either gound. The Pos ground has 3 wires, Neg ground has 2. Stay well,
Didn’t realize Pete had a 3.8.